CHICAGO ZOOLOGICAL SOCIETY: Form 990, tax year 2020

View the entire original 990 at ProPublica ↗

Organization: CHICAGO ZOOLOGICAL SOCIETY (EIN 36-2167016)
Tax period: 2020-01-01 to 2020-12-31
Filed: 2021-07-27
IRS object ID: 202142099349300304
Schema version: 2020v4.1
Source: Download XML · Original 990 at ProPublica

Every field in the e-filed return. Faint text is the IRS element name, for citing.

Return header
Form 990
Schedule A
Schedule B
Schedule C
Schedule D
Schedule F
Schedule G
Schedule I
Schedule J
Schedule K
Schedule L
Schedule M
Schedule O

Return header ReturnHeader

Field	Value	IRS element (for citing)
Return	2021-07-27T12:49:23-00:00	ReturnTs
Tax Period End	2020-12-31	TaxPeriodEndDt

Preparer Firm PreparerFirmGrp

Preparer Firm Name PreparerFirmName

Field	Value	IRS element (for citing)
Business Name Line1	Plante Moran PLLC	BusinessNameLine1Txt

Preparer US Address PreparerUSAddress

Field	Value	IRS element (for citing)
Address Line1	10 South Riverside Plaza 9th Floor	AddressLine1Txt
City	Chicago	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60606	ZIPCd

Field	Value	IRS element (for citing)
Return Type	990	ReturnTypeCd
Tax Period Begin	2020-01-01	TaxPeriodBeginDt

Filer Filer

Field	Value	IRS element (for citing)
EIN	362167016	EIN

Business Name BusinessName

Field	Value	IRS element (for citing)
Business Name Line1	Chicago Zoological Society	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Business Name Control	CHIC	BusinessNameControlTxt
Phone	7086888300	PhoneNum

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	3300 Golf Road	AddressLine1Txt
City	Brookfield	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60513	ZIPCd

Business Officer BusinessOfficerGrp

Field	Value	IRS element (for citing)
Person	Stuart D Strahl Ph D	PersonNm
Person Title	President and CEO	PersonTitleTxt
Signature	2021-07-27	SignatureDt
Discuss With Paid Preparer	Yes (true)	DiscussWithPaidPreparerInd

Signing Officer SigningOfficerGrp

Person Full Name PersonFullName

Field	Value	IRS element (for citing)
Person First	Stuart	PersonFirstNm
Person Last	Strahl	PersonLastNm

Field	Value	IRS element (for citing)
SSN	999009999	SSN

Preparer Person PreparerPersonGrp

Field	Value	IRS element (for citing)
Preparer Person	LuAnn Trapp	PreparerPersonNm
PTIN	P01506476	PTIN
Phone	3122071040	PhoneNum
Preparation	2021-07-27	PreparationDt

Additional Filer Information AdditionalFilerInformation

Trusted Customer TrustedCustomerGrp

Field	Value	IRS element (for citing)
Authentication Assurance Level	AAL1	AuthenticationAssuranceLevelCd
Identity Assurance Level	IAL1	IdentityAssuranceLevelCd

Field	Value	IRS element (for citing)
Tax	2020	TaxYr
Build TS	2022-09-23 18:48:47Z	BuildTS

Form 990 IRS990

Doing Business As Name DoingBusinessAsName

Field	Value	IRS element (for citing)
Business Name Line1	Brookfield Zoo	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Principal Officer	Stuart D Strahl PhD	PrincipalOfficerNm

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	3300 Golf Road	AddressLine1Txt
City	Brookfield	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60513	ZIPCd

Field	Value	IRS element (for citing)
Gross Receipts	$81,160,511	GrossReceiptsAmt
Group Return For Affiliates	false	GroupReturnForAffiliatesInd
Organization501c3	Yes (X)	Organization501c3Ind
Website Address	www.czs.org	WebsiteAddressTxt
Type Of Organization Corp	Yes (X)	TypeOfOrganizationCorpInd
Formation	1921	FormationYr
Legal Domicile State	IL	LegalDomicileStateCd
Activity Or Mission	To inspire conservation leadership by connecting people with wildlife and nature.	ActivityOrMissionDesc
Voting Members Governing Body	45	VotingMembersGoverningBodyCnt
Voting Members Independent	44	VotingMembersIndependentCnt
Total Employee	1016	TotalEmployeeCnt
Total Volunteers	867	TotalVolunteersCnt
Total Gross UBI	$114,229	TotalGrossUBIAmt
Net Unrelated Bus Txbl Incm	$40,865	NetUnrelatedBusTxblIncmAmt
PY Contributions Grants	$37,941,180	PYContributionsGrantsAmt
CY Contributions Grants	$38,193,684	CYContributionsGrantsAmt
PY Program Service Revenue	$21,702,597	PYProgramServiceRevenueAmt
CY Program Service Revenue	$19,503,699	CYProgramServiceRevenueAmt
PY Investment Income	$3,002,411	PYInvestmentIncomeAmt
CY Investment Income	$1,906,500	CYInvestmentIncomeAmt
PY Other Revenue	$8,351,559	PYOtherRevenueAmt
CY Other Revenue	$240,836	CYOtherRevenueAmt
PY Total Revenue	$70,997,747	PYTotalRevenueAmt
CY Total Revenue	$59,844,719	CYTotalRevenueAmt
PY Grants And Similar Paid	$293,590	PYGrantsAndSimilarPaidAmt
CY Grants And Similar Paid	$223,303	CYGrantsAndSimilarPaidAmt
CY Benefits Paid To Members	$0	CYBenefitsPaidToMembersAmt
PY Salaries Comp Emp Bnft Paid	$43,376,990	PYSalariesCompEmpBnftPaidAmt
CY Salaries Comp Emp Bnft Paid	$32,187,419	CYSalariesCompEmpBnftPaidAmt
PY Total Prof Fndrsng Expns	$69,592	PYTotalProfFndrsngExpnsAmt
CY Total Prof Fndrsng Expns	$41,243	CYTotalProfFndrsngExpnsAmt
CY Total Fundraising Expense	$2,578,525	CYTotalFundraisingExpenseAmt
PY Other Expenses	$29,837,978	PYOtherExpensesAmt
CY Other Expenses	$24,360,287	CYOtherExpensesAmt
PY Total Expenses	$73,578,150	PYTotalExpensesAmt
CY Total Expenses	$56,812,252	CYTotalExpensesAmt
PY Revenues Less Expenses	-$2,580,403	PYRevenuesLessExpensesAmt
CY Revenues Less Expenses	$3,032,467	CYRevenuesLessExpensesAmt
Total Assets BOY	$212,738,000	TotalAssetsBOYAmt
Total Assets EOY	$212,053,000	TotalAssetsEOYAmt
Total Liabilities BOY	$54,890,000	TotalLiabilitiesBOYAmt
Total Liabilities EOY	$47,049,000	TotalLiabilitiesEOYAmt
Net Assets Or Fund Balances BOY	$157,848,000	NetAssetsOrFundBalancesBOYAmt
Net Assets Or Fund Balances EOY	$165,004,000	NetAssetsOrFundBalancesEOYAmt
Info In Schedule O Part III	Yes (X)	InfoInScheduleOPartIIIInd
Mission	To inspire conservation leadership by connecting people with wildlife and nature.	MissionDesc
Significant New Program Srvc	false	SignificantNewProgramSrvcInd
Significant Change	Yes (true)	SignificantChangeInd
Expense	$20,827,479	ExpenseAmt
Revenue	$16,160,782	RevenueAmt
Desc	Park Operations The CZS maintains 75 buildings on 214 acres of land to exhibit over 2,500 animals. In a typical year, two million visitors annually enjoy the experience of seeing and learning about the animals of the world. Each individual that enters through Brookfield Zoos gates represents an opportunity to introduce representatives of the wild world, to convey our intertwined connections to the animal kingdom, and to encourage positive change in the world. During 2020, the zoo was closed to the public from March-June and open under limited capacity restrictions July-Dec, due to the COVID Pandemic. Indoor areas and special attractions remained closed July-Dec. Total attendance for 2020 was 825,000. During July-Dec, CZS maintained a safe outdoor environment for guests to connect with animals, ensuring abidence with state mandated COVID safety protocols including capacity restrictions, social distancing and mask wearing . The membership team serviced our 112,000 member households, providing them with the opportunity to participate in the conservation and educational efforts of CZS.	Desc

Prog Srvc Accom Acty2 ProgSrvcAccomActy2Grp

Field	Value	IRS element (for citing)
Expense	$19,885,000	ExpenseAmt
Grant	$21,049	GrantAmt
Revenue	$459,830	RevenueAmt
Desc	Center for Science and Animal Well-Being CSAW More than 2500 ambassadors of the animal kingdom provide our visitors with a rare opportunity to see species from around the globe and experience up close, personal encounters with some. Expert care of these ambassadors is a time-honored tradition at CZS, where innovations in husbandry techniques and pioneering breeding programs are part of the cuttting edge culture of excellence. CSAW staff integrate disciplines such as population biology, behavioral science, nutrition and veterinary science to determine the best ways to provide and continuously care for the animals. They also incorporate models and practices from around the world, and from an array of animal care professionals, to develop the best possible zoo-based animal care and management practices. Throughout the COVID related closure of the Zoo to the public, staff continued to provide expert care to the over 2500 animals in their care. Staff also participated in daily Bringing the Zoo to You virtual keeper chats available for free to the pubic on social media platforms.	Desc

Prog Srvc Accom Acty3 ProgSrvcAccomActy3Grp

Field	Value	IRS element (for citing)
Expense	$5,020,000	ExpenseAmt
Grant	$202,254	GrantAmt
Revenue	$148,579	RevenueAmt
Desc	Center for Conservation Leadership CCL Through its many conservation and education programs, CZS communicates with others to engender in them a sense of ownership about living harmoniously with nature and helping save endangered species. Education specialists, volunteers, curators, graphic and exhibit designers, photographers and many others contribute to sharing this information both in person and virtually. As well as reaching the daily visitors to the Zoo, CZS engages would be conservationists outside of the Zoo including classrooms of school children, teachers and community leaders. Additionally through field programs, CZS supports efforts to protect and restore populations of threatened species in other parts of the world. The CCL strengthens the bridge between education and conservation, between field research and the animals in our care. During the COVID related closure of the Zoo to the public, CCL staff succesfully converted many of their in person classes to virtual learning platforms.	Desc

Field	Value	IRS element (for citing)
Total Program Service Expenses	$45,732,479	TotalProgramServiceExpensesAmt
Described In Section501c3	Yes (true)	DescribedInSection501c3Ind
Schedule B Required	Yes (true)	ScheduleBRequiredInd
Political Campaign Acty	false	PoliticalCampaignActyInd
Lobbying Activities	Yes (true)	LobbyingActivitiesInd
Subject To Proxy Tax	false	SubjectToProxyTaxInd
Donor Advised Fund	Yes (true)	DonorAdvisedFundInd
Conservation Easements	false	ConservationEasementsInd
Collections Of Art	Yes (true)	CollectionsOfArtInd
Credit Counseling	false	CreditCounselingInd
Donor Rstr Or Quasi Endowments	Yes (true)	DonorRstrOrQuasiEndowmentsInd
Report Land Building Equipment	Yes (true)	ReportLandBuildingEquipmentInd
Report Investments Other Sec	false	ReportInvestmentsOtherSecInd
Report Program Related Invst	false	ReportProgramRelatedInvstInd
Report Other Assets	false	ReportOtherAssetsInd
Report Other Liabilities	Yes (true)	ReportOtherLiabilitiesInd
Include FIN48 Footnote	false	IncludeFIN48FootnoteInd
Independent Audit Fincl Stmt	Yes (true)	IndependentAuditFinclStmtInd
Consolidated Audit Fincl Stmt	Yes (true)	ConsolidatedAuditFinclStmtInd
School Operating	false	SchoolOperatingInd
Foreign Office	false	ForeignOfficeInd
Foreign Activities	Yes (true)	ForeignActivitiesInd
More Than5000 K To Org	Yes (true)	MoreThan5000KToOrgInd
More Than5000 K To Individuals	false	MoreThan5000KToIndividualsInd
Professional Fundraising	Yes (true)	ProfessionalFundraisingInd
Fundraising Activities	Yes (true)	FundraisingActivitiesInd
Gaming Activities	false	GamingActivitiesInd
Operate Hospital	false	OperateHospitalInd
Grants To Organizations	Yes (true)	GrantsToOrganizationsInd
Grants To Individuals	Yes (true)	GrantsToIndividualsInd
Schedule J Required	Yes (true)	ScheduleJRequiredInd
Tax Exempt Bonds	Yes (true)	TaxExemptBondsInd
Invest Tax Exempt Bonds	false	InvestTaxExemptBondsInd
Escrow Account	false	EscrowAccountInd
On Behalf Of Issuer	false	OnBehalfOfIssuerInd
Engaged In Excess Benefit Trans	false	EngagedInExcessBenefitTransInd
PY Excess Benefit Trans	false	PYExcessBenefitTransInd
Loan Outstanding	false	LoanOutstandingInd
Grant To Related Person	false	GrantToRelatedPersonInd
Business Rln With Org Mem	false	BusinessRlnWithOrgMemInd
Business Rln With Fam Mem	Yes (true)	BusinessRlnWithFamMemInd
Business Rln With35 Ctrl Ent	false	BusinessRlnWith35CtrlEntInd
Deductible Non Cash Contri	Yes (true)	DeductibleNonCashContriInd
Deductible Art Contribution	false	DeductibleArtContributionInd
Terminate Operations	false	TerminateOperationsInd
Partial Liquidation	false	PartialLiquidationInd
Disregarded Entity	false	DisregardedEntityInd
Related Entity	false	RelatedEntityInd
Related Organization Ctrl Ent	false	RelatedOrganizationCtrlEntInd
Trnsfr Exmpt Non Chrtbl Rltd Org	false	TrnsfrExmptNonChrtblRltdOrgInd
Activities Conducted Prtshp	false	ActivitiesConductedPrtshpInd
Schedule O Required	Yes (true)	ScheduleORequiredInd
Info In Schedule O Part V	Yes (X)	InfoInScheduleOPartVInd
IRP Document	74	IRPDocumentCnt
IRP Document W2 G	0	IRPDocumentW2GCnt
Backup Wthld Compliance	Yes (true)	BackupWthldComplianceInd
Employee	1016	EmployeeCnt
Employment Tax Returns Filed	Yes (true)	EmploymentTaxReturnsFiledInd
Unrelated Bus Incm Over Limit	Yes (true)	UnrelatedBusIncmOverLimitInd
Form990 T Filed	Yes (true)	Form990TFiledInd
Foreign Financial Account	false	ForeignFinancialAccountInd
Prohibited Tax Shelter Trans	false	ProhibitedTaxShelterTransInd
Taxable Party Notification	false	TaxablePartyNotificationInd
Nondeductible Contributions	false	NondeductibleContributionsInd
Quid Pro Quo Contributions	Yes (true)	QuidProQuoContributionsInd
Quid Pro Quo Contri Discl	Yes (true)	QuidProQuoContriDisclInd
Form8282 Property Disposed Of	false	Form8282PropertyDisposedOfInd
Rcv Fnds To Pay Prsnl Bnft Cntrct	false	RcvFndsToPayPrsnlBnftCntrctInd
Pay Premiums Prsnl Bnft Cntrct	false	PayPremiumsPrsnlBnftCntrctInd
Form1098 C Filed	Yes (true)	Form1098CFiledInd
Indoor Tanning Services	false	IndoorTanningServicesInd
Subj To Tax Rmnrtn Ex Prcht Pymt	false	SubjToTaxRmnrtnExPrchtPymtInd
Subject To Excs Tax Net Invst Inc	false	SubjectToExcsTaxNetInvstIncInd
Info In Schedule O Part VI	Yes (X)	InfoInScheduleOPartVIInd
Governing Body Voting Members	45	GoverningBodyVotingMembersCnt
Independent Voting Member	44	IndependentVotingMemberCnt
Family Or Business Rln	Yes (true)	FamilyOrBusinessRlnInd
Delegation Of Mgmt Duties	Yes (true)	DelegationOfMgmtDutiesInd
Change To Org Documents	false	ChangeToOrgDocumentsInd
Material Diversion Or Misuse	false	MaterialDiversionOrMisuseInd
Members Or Stockholders	Yes (true)	MembersOrStockholdersInd
Election Of Board Members	Yes (true)	ElectionOfBoardMembersInd
Decisions Subject To Approva	false	DecisionsSubjectToApprovaInd
Minutes Of Governing Body	Yes (true)	MinutesOfGoverningBodyInd
Minutes Of Committees	Yes (true)	MinutesOfCommitteesInd
Officer Mailing Address	false	OfficerMailingAddressInd
Local Chapters	false	LocalChaptersInd
Form990 Provided To Gvrn Body	false	Form990ProvidedToGvrnBodyInd
Conflict Of Interest Policy	Yes (true)	ConflictOfInterestPolicyInd
Annual Disclosure Covered Prsn	Yes (true)	AnnualDisclosureCoveredPrsnInd
Regular Monitoring Enfrc	Yes (true)	RegularMonitoringEnfrcInd
Whistleblower Policy	Yes (true)	WhistleblowerPolicyInd
Document Retention Policy	Yes (true)	DocumentRetentionPolicyInd
Compensation Process CEO	Yes (true)	CompensationProcessCEOInd
Compensation Process Other	Yes (true)	CompensationProcessOtherInd
Investment In Joint Venture	false	InvestmentInJointVentureInd
States Where Copy Of Return Is Fld	FL	StatesWhereCopyOfReturnIsFldCd
States Where Copy Of Return Is Fld	IL	StatesWhereCopyOfReturnIsFldCd
States Where Copy Of Return Is Fld	WI	StatesWhereCopyOfReturnIsFldCd
Upon Request	Yes (X)	UponRequestInd

Books In Care Of Detail BooksInCareOfDetail

Field	Value	IRS element (for citing)
Person	David E Burns	PersonNm
Phone	7086888387	PhoneNum

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	3300 Golf Road	AddressLine1Txt
City	Brookfield	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60513	ZIPCd

Form990 Part VII Section A Form990PartVIISectionAGrp (58 entries)

TitleTitleTxt	Average Hours Per WeekAverageHoursPerWeekRt	Individual Trustee Or DirectorIndividualTrusteeOrDirectorInd	OfficerOfficerInd	Reportable Comp From OrgReportableCompFromOrgAmt	Reportable Comp From Rltd OrgReportableCompFromRltdOrgAmt	Other CompensationOtherCompensationAmt	Key EmployeeKeyEmployeeInd	Highest Compensated EmployeeHighestCompensatedEmployeeInd
Stuart D Strahl PhD
President and CEO	040.00	Yes (X)	Yes (X)	$823,727	$0	$39,334
Richard G Gamble
Chief Operating Officer through 6/20	040.00			$372,496	$0	$38,176	Yes (X)
Cynthia W Zeigler
Chief Advancement Officer	040.00			$327,497	$0	$28,426	Yes (X)
David E Burns
Chief Financial and Admin. Officer	040.00			$262,940	$0	$29,651	Yes (X)
Sarah Breen-Bartecki
Sr. VP Conserv Pgms, ResearchFunding	040.00			$237,757	$0	$16,598	Yes (X)
Frank W Zeigler
Sr. VP Animal Programs	040.00			$235,098	$0	$14,321	Yes (X)
Leah Rippe
VP Marketing Communications	040.00			$185,513	$0	$38,362		Yes (X)
Mary A Cronin
Master Planning Coordinator	040.00			$203,846	$0	$0		Yes (X)
Sandra L Dornhecker
Sr. VP Human Resources	040.00			$174,669	$0	$24,571		Yes (X)
Michael Owens
VP Information Technology	040.00			$190,705	$0	$8,283		Yes (X)
Jerome E Johnston
VP Guest Services Operations	040.00			$175,044	$0	$11,552		Yes (X)
John P Grube
Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Fred A Krehbiel
Honorary Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
William C Kunkler III
Deputy Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Elizabeth Hamill Bramsen
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Merrick M Elfman
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Bert A Getz Jr
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Kelley C Schueler
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Kathryn Babcock Shaffer
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Cherryl T Thomas
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Michael P Emmert
Treasurer	002.00	Yes (X)	Yes (X)	$0	$0	$0
Randall G Vickery
Secretary	002.00	Yes (X)	Yes (X)	$0	$0	$0
Stuart B Abelson
Trustee	002.00	Yes (X)		$0	$0	$0
Mrs LW Alberts
Trustee through 11/20	002.00	Yes (X)		$0	$0	$0
George Barr
Trustee	002.00	Yes (X)		$0	$0	$0
Walter W Becky II
Trustee	002.00	Yes (X)		$0	$0	$0
Jay D Bergman
Trustee	002.00	Yes (X)		$0	$0	$0
Edward McCormick Blair Jr
Trustee	002.00	Yes (X)		$0	$0	$0
Barbara J Bradford
Trustee	002.00	Yes (X)		$0	$0	$0
James A Bryan
Trustee	002.00	Yes (X)		$0	$0	$0
Michael G Canning
Trustee	002.00	Yes (X)		$0	$0	$0
Kevin M Carmody
Trustee	002.00	Yes (X)		$0	$0	$0
John A Carpenter
Trustee	002.00	Yes (X)		$0	$0	$0
Dr Bonny Chen
Trustee	002.00	Yes (X)		$0	$0	$0
Rita Sola Cook
Trustee	002.00	Yes (X)		$0	$0	$0
Dawn M Davis
Trustee through 12/20	002.00	Yes (X)		$0	$0	$0
JR Davis III
Trustee as of 12/20	002.00	Yes (X)		$0	$0	$0
Michael F DeSantiago
Trustee	002.00	Yes (X)		$0	$0	$0
Gregory J DiDomenico
Trustee	002.00	Yes (X)		$0	$0	$0
Arthur J Fogel
Trustee	002.00	Yes (X)		$0	$0	$0
Sasha L Gerritson
Trustee	002.00	Yes (X)		$0	$0	$0
Veronica Gomez
Trustee	002.00	Yes (X)		$0	$0	$0
Barbara Grayson
Trustee as of 3/20	002.00	Yes (X)		$0	$0	$0
Joseph A Gregoire
Trustee	002.00	Yes (X)		$0	$0	$0
Steve Groetsema
Trustee	002.00	Yes (X)		$0	$0	$0
Christine E Holden
Trustee through 7/20	002.00	Yes (X)		$0	$0	$0
Heidi Huizenga
Trustee	002.00	Yes (X)		$0	$0	$0
Kevin M Keeley
Trustee	002.00	Yes (X)		$0	$0	$0
Molly Keller
Trustee	002.00	Yes (X)		$0	$0	$0
Kevin M Killips
Trustee as of 3/20	002.00	Yes (X)		$0	$0	$0
Barbara Levy Kipper
Trustee	002.00	Yes (X)		$0	$0	$0
William O Lipinski
Trustee	002.00	Yes (X)		$0	$0	$0
Jerry Manne
Trustee	002.00	Yes (X)		$0	$0	$0
Toni Preckwinkle
Trustee	002.00	Yes (X)		$0	$0	$0
Mark G Sander
Trustee	002.00	Yes (X)		$0	$0	$0
Ted Staszak
Trustee	002.00	Yes (X)		$0	$0	$0
Patrick E Whiteside
Trustee	002.00	Yes (X)		$0	$0	$0
Ryan P Williamson
Trustee	002.00	Yes (X)		$0	$0	$0

Field	Value	IRS element (for citing)
Total Reportable Comp From Org	$3,189,292	TotalReportableCompFromOrgAmt
Total Other Compensation	$249,274	TotalOtherCompensationAmt
Indiv Rcvd Greater Than100 K	36	IndivRcvdGreaterThan100KCnt
Former Ofcr Employees Listed	false	FormerOfcrEmployeesListedInd
Total Comp Greater Than150 K	Yes (true)	TotalCompGreaterThan150KInd
Compensation From Other Srcs	false	CompensationFromOtherSrcsInd

Contractor Compensation ContractorCompensationGrp (5 entries)

Address Line1ContractorAddress/USAddress/AddressLine1Txt	CityContractorAddress/USAddress/CityNm	State AbbreviationContractorAddress/USAddress/StateAbbreviationCd	ZIPContractorAddress/USAddress/ZIPCd	ServicesServicesDesc	CompensationCompensationAmt
University of Illinois
506 S Wright St	Urbana	IL	61802	Veterinary/PathologyLab Services	$586,341
Dino Don Inc
1640 N Ridley Creek Rd	Media	PA	19063	3rd Party Exhibit	$397,209
The Northern Trust Company
50 S LaSalle Street	Chicago	IL	60603	Banking and Investment Services	$373,122
RapportOAG
PO Box 74008223	Chicago	IL	60674	Advertising	$318,220
Chilton Yambert Porter LLP
303 W Madison Suite 2300	Chicago	IL	60606	Legal Services	$314,746

Field	Value	IRS element (for citing)
Cntrct Rcvd Greater Than100 K	24	CntrctRcvdGreaterThan100KCnt
Membership Dues	$57,700	MembershipDuesAmt
Fundraising	$1,336,116	FundraisingAmt
Government Grants	$21,344,982	GovernmentGrantsAmt
All Other Contributions	$15,454,886	AllOtherContributionsAmt
Noncash Contributions	$3,932,052	NoncashContributionsAmt
Total Contributions	$38,193,684	TotalContributionsAmt

Program Service Revenue ProgramServiceRevenueGrp (5 entries)

DescDesc	BusinessBusinessCd	Total Revenue ColumnTotalRevenueColumnAmt	Related Or Exempt Func IncomeRelatedOrExemptFuncIncomeAmt	ExclusionExclusionAmt
General Admissions	900099	$3,840,260	$3,840,260
Memberships	900099	$11,075,817	$11,075,817
Visitor Services	900099	$1,840,732	$403,194	$1,437,538
Admissions-Internal Attractions	900099	$337,566	$337,566
Visitor Parking	900099	$1,272,797		$1,272,797

Total Oth Program Service Rev TotalOthProgramServiceRevGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$1,136,527	TotalRevenueColumnAmt
Related Or Exempt Func Income	$926,283	RelatedOrExemptFuncIncomeAmt
Unrelated Business Revenue	$114,229	UnrelatedBusinessRevenueAmt
Exclusion	$96,015	ExclusionAmt

Field	Value	IRS element (for citing)
Total Program Service Revenue	$19,503,699	TotalProgramServiceRevenueAmt

Investment Income InvestmentIncomeGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$838,085	TotalRevenueColumnAmt
Exclusion	$838,085	ExclusionAmt

Gross Rents GrossRentsGrp

Field	Value	IRS element (for citing)
Real	$58,650	RealAmt

Rental Income Or Loss RentalIncomeOrLossGrp

Field	Value	IRS element (for citing)
Real	$58,650	RealAmt

Net Rental Income Or Loss NetRentalIncomeOrLossGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$58,650	TotalRevenueColumnAmt
Exclusion	$58,650	ExclusionAmt

Gross Amount Sales Assets GrossAmountSalesAssetsGrp

Field	Value	IRS element (for citing)
Securities	$22,220,373	SecuritiesAmt

Less Cost Oth Basis Sales Expnss LessCostOthBasisSalesExpnssGrp

Field	Value	IRS element (for citing)
Securities	$21,151,958	SecuritiesAmt

Gain Or Loss GainOrLossGrp

Field	Value	IRS element (for citing)
Securities	$1,068,415	SecuritiesAmt

Net Gain Or Loss Investments NetGainOrLossInvestmentsGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$1,068,415	TotalRevenueColumnAmt
Exclusion	$1,068,415	ExclusionAmt

Field	Value	IRS element (for citing)
Fundraising Gross Income	$257,001	FundraisingGrossIncomeAmt
Contri Rpt Fundraising Event	$1,336,116	ContriRptFundraisingEventAmt
Fundraising Direct Expenses	$174,937	FundraisingDirectExpensesAmt

Net Incm From Fundraising Evt NetIncmFromFundraisingEvtGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$82,064	TotalRevenueColumnAmt
Exclusion	$82,064	ExclusionAmt

Field	Value	IRS element (for citing)
Gross Sales Of Inventory	$89,019	GrossSalesOfInventoryAmt
Cost Of Goods Sold	-$11,103	CostOfGoodsSoldAmt

Net Income Or Loss NetIncomeOrLossGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$100,122	TotalRevenueColumnAmt
Related Or Exempt Func Income	$71,842	RelatedOrExemptFuncIncomeAmt
Exclusion	$28,280	ExclusionAmt

Total Revenue TotalRevenueGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$59,844,719	TotalRevenueColumnAmt
Related Or Exempt Func Income	$16,654,962	RelatedOrExemptFuncIncomeAmt
Unrelated Business Revenue	$114,229	UnrelatedBusinessRevenueAmt
Exclusion	$4,881,844	ExclusionAmt

Grants To Domestic Orgs GrantsToDomesticOrgsGrp

Field	Value	IRS element (for citing)
Total	$30,475	TotalAmt
Program Services	$30,475	ProgramServicesAmt

Grants To Domestic Individuals GrantsToDomesticIndividualsGrp

Field	Value	IRS element (for citing)
Total	$25,000	TotalAmt
Program Services	$25,000	ProgramServicesAmt

Foreign Grants ForeignGrantsGrp

Field	Value	IRS element (for citing)
Total	$167,828	TotalAmt
Program Services	$167,828	ProgramServicesAmt

Benefits To Members BenefitsToMembersGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Comp Current Ofcr Directors CompCurrentOfcrDirectorsGrp

Field	Value	IRS element (for citing)
Total	$2,426,021	TotalAmt
Program Services	$949,701	ProgramServicesAmt
Management And General	$752,329	ManagementAndGeneralAmt
Fundraising	$723,991	FundraisingAmt

Comp Disqual Persons CompDisqualPersonsGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Other Salaries And Wages OtherSalariesAndWagesGrp

Field	Value	IRS element (for citing)
Total	$21,676,694	TotalAmt
Program Services	$17,796,758	ProgramServicesAmt
Management And General	$2,899,543	ManagementAndGeneralAmt
Fundraising	$980,393	FundraisingAmt

Pension Plan Contributions PensionPlanContributionsGrp

Field	Value	IRS element (for citing)
Total	$557,708	TotalAmt
Program Services	$457,883	ProgramServicesAmt
Management And General	$74,601	ManagementAndGeneralAmt
Fundraising	$25,224	FundraisingAmt

Other Employee Benefits OtherEmployeeBenefitsGrp

Field	Value	IRS element (for citing)
Total	$5,105,649	TotalAmt
Program Services	$3,721,809	ProgramServicesAmt
Management And General	$977,726	ManagementAndGeneralAmt
Fundraising	$406,114	FundraisingAmt

Payroll Taxes PayrollTaxesGrp

Field	Value	IRS element (for citing)
Total	$2,421,347	TotalAmt
Program Services	$1,987,947	ProgramServicesAmt
Management And General	$323,887	ManagementAndGeneralAmt
Fundraising	$109,513	FundraisingAmt

Fees For Services Management FeesForServicesManagementGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Fees For Services Legal FeesForServicesLegalGrp

Field	Value	IRS element (for citing)
Total	$457,227	TotalAmt
Management And General	$457,227	ManagementAndGeneralAmt

Fees For Services Accounting FeesForServicesAccountingGrp

Field	Value	IRS element (for citing)
Total	$85,300	TotalAmt
Management And General	$85,300	ManagementAndGeneralAmt

Fees For Services Lobbying FeesForServicesLobbyingGrp

Field	Value	IRS element (for citing)
Total	$49,627	TotalAmt
Management And General	$49,627	ManagementAndGeneralAmt

Fees For Services Prof Fundraising FeesForServicesProfFundraising

Field	Value	IRS element (for citing)
Total	$41,243	TotalAmt
Fundraising	$41,243	FundraisingAmt

Fees For Srvc Invst Mgmnt Fees FeesForSrvcInvstMgmntFeesGrp

Field	Value	IRS element (for citing)
Total	$128,854	TotalAmt
Management And General	$128,854	ManagementAndGeneralAmt

Fees For Services Other FeesForServicesOtherGrp

Field	Value	IRS element (for citing)
Total	$3,469,043	TotalAmt
Program Services	$3,188,266	ProgramServicesAmt
Management And General	$238,821	ManagementAndGeneralAmt
Fundraising	$41,956	FundraisingAmt

Advertising AdvertisingGrp

Field	Value	IRS element (for citing)
Total	$1,033,271	TotalAmt
Management And General	$1,033,271	ManagementAndGeneralAmt

Office Expenses OfficeExpensesGrp

Field	Value	IRS element (for citing)
Total	$4,211,896	TotalAmt
Program Services	$3,968,893	ProgramServicesAmt
Management And General	$148,976	ManagementAndGeneralAmt
Fundraising	$94,027	FundraisingAmt

Information Technology InformationTechnologyGrp

Field	Value	IRS element (for citing)
Total	$912,201	TotalAmt
Program Services	$118,643	ProgramServicesAmt
Management And General	$730,477	ManagementAndGeneralAmt
Fundraising	$63,081	FundraisingAmt

Royalties RoyaltiesGrp

Field	Value	IRS element (for citing)
Total	$10,203	TotalAmt
Program Services	$10,203	ProgramServicesAmt

Occupancy OccupancyGrp

Field	Value	IRS element (for citing)
Total	$1,864,834	TotalAmt
Program Services	$1,852,720	ProgramServicesAmt
Management And General	$9,495	ManagementAndGeneralAmt
Fundraising	$2,619	FundraisingAmt

Travel TravelGrp

Field	Value	IRS element (for citing)
Total	$12,382	TotalAmt
Program Services	$9,548	ProgramServicesAmt
Management And General	$1,235	ManagementAndGeneralAmt
Fundraising	$1,599	FundraisingAmt

Pymt Travel Entrtnmnt Pub Ofcl PymtTravelEntrtnmntPubOfclGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Conferences Meetings ConferencesMeetingsGrp

Field	Value	IRS element (for citing)
Total	$29,139	TotalAmt
Program Services	$17,937	ProgramServicesAmt
Management And General	$6,040	ManagementAndGeneralAmt
Fundraising	$5,162	FundraisingAmt

Interest InterestGrp

Field	Value	IRS element (for citing)
Total	$349,654	TotalAmt
Program Services	$349,654	ProgramServicesAmt

Payments To Affiliates PaymentsToAffiliatesGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Depreciation Depletion DepreciationDepletionGrp

Field	Value	IRS element (for citing)
Total	$8,897,169	TotalAmt
Program Services	$8,418,532	ProgramServicesAmt
Management And General	$435,992	ManagementAndGeneralAmt
Fundraising	$42,645	FundraisingAmt

Insurance InsuranceGrp

Field	Value	IRS element (for citing)
Total	$1,008,828	TotalAmt
Program Services	$921,758	ProgramServicesAmt
Management And General	$69,716	ManagementAndGeneralAmt
Fundraising	$17,354	FundraisingAmt

Other Expenses OtherExpensesGrp (4 entries)

DescDesc	TotalTotalAmt	Program ServicesProgramServicesAmt
Animal Food and Transport	$1,094,798	$1,094,798
Revenue Bond Maintenance fees	$343,040	$343,040
Gain/Loss on Retirement of Fixed Assets	$61,600	$61,600
UBIT Taxes	$12,872	$12,872

All Other Expenses AllOtherExpensesGrp

Field	Value	IRS element (for citing)
Total	$328,349	TotalAmt
Program Services	$226,614	ProgramServicesAmt
Management And General	$78,131	ManagementAndGeneralAmt
Fundraising	$23,604	FundraisingAmt

Total Functional Expenses TotalFunctionalExpensesGrp

Field	Value	IRS element (for citing)
Total	$56,812,252	TotalAmt
Program Services	$45,732,479	ProgramServicesAmt
Management And General	$8,501,248	ManagementAndGeneralAmt
Fundraising	$2,578,525	FundraisingAmt

Cash Non Interest Bearing CashNonInterestBearingGrp

Field	Value	IRS element (for citing)
BOY	$1,812,623	BOYAmt
EOY	$506,662	EOYAmt

Savings And Temp Cash Invst SavingsAndTempCashInvstGrp

Field	Value	IRS element (for citing)
BOY	$18,604,492	BOYAmt
EOY	$27,671,049	EOYAmt

Pledges And Grants Receivable PledgesAndGrantsReceivableGrp

Field	Value	IRS element (for citing)
BOY	$7,346,577	BOYAmt
EOY	$4,732,606	EOYAmt

Accounts Receivable AccountsReceivableGrp

Field	Value	IRS element (for citing)
BOY	$471,080	BOYAmt
EOY	$828,165	EOYAmt

Inventories For Sale Or Use InventoriesForSaleOrUseGrp

Field	Value	IRS element (for citing)
BOY	$595,245	BOYAmt

Prepaid Expenses Defrd Charges PrepaidExpensesDefrdChargesGrp

Field	Value	IRS element (for citing)
BOY	$699,517	BOYAmt
EOY	$557,950	EOYAmt

Field	Value	IRS element (for citing)
Land Bldg Equip Cost Or Other Bss	$287,452,711	LandBldgEquipCostOrOtherBssAmt
Land Bldg Equip Accum Deprec	$166,390,364	LandBldgEquipAccumDeprecAmt

Land Bldg Equip Basis Net LandBldgEquipBasisNetGrp

Field	Value	IRS element (for citing)
BOY	$129,293,909	BOYAmt
EOY	$121,062,347	EOYAmt

Investments Pub Traded Sec InvestmentsPubTradedSecGrp

Field	Value	IRS element (for citing)
BOY	$53,805,000	BOYAmt
EOY	$56,576,000	EOYAmt

Other Assets Total OtherAssetsTotalGrp

Field	Value	IRS element (for citing)
BOY	$109,557	BOYAmt
EOY	$118,221	EOYAmt

Total Assets TotalAssetsGrp

Field	Value	IRS element (for citing)
BOY	$212,738,000	BOYAmt
EOY	$212,053,000	EOYAmt

Accounts Payable Accr Expnss AccountsPayableAccrExpnssGrp

Field	Value	IRS element (for citing)
BOY	$6,609,250	BOYAmt
EOY	$3,985,397	EOYAmt

Deferred Revenue DeferredRevenueGrp

Field	Value	IRS element (for citing)
BOY	$9,846,712	BOYAmt
EOY	$9,365,491	EOYAmt

Tax Exempt Bond Liabilities TaxExemptBondLiabilitiesGrp

Field	Value	IRS element (for citing)
BOY	$34,185,000	BOYAmt
EOY	$29,975,000	EOYAmt

Other Liabilities OtherLiabilitiesGrp

Field	Value	IRS element (for citing)
BOY	$4,249,038	BOYAmt
EOY	$3,723,112	EOYAmt

Total Liabilities TotalLiabilitiesGrp

Field	Value	IRS element (for citing)
BOY	$54,890,000	BOYAmt
EOY	$47,049,000	EOYAmt

Field	Value	IRS element (for citing)
Organization Follows FASB117	Yes (X)	OrganizationFollowsFASB117Ind

No Donor Restriction Net Assets NoDonorRestrictionNetAssetsGrp

Field	Value	IRS element (for citing)
BOY	$135,237,000	BOYAmt
EOY	$140,959,000	EOYAmt

Donor Restriction Net Assets DonorRestrictionNetAssetsGrp

Field	Value	IRS element (for citing)
BOY	$22,611,000	BOYAmt
EOY	$24,045,000	EOYAmt

Total Net Assets Fund Balance TotalNetAssetsFundBalanceGrp

Field	Value	IRS element (for citing)
BOY	$157,848,000	BOYAmt
EOY	$165,004,000	EOYAmt

Tot Liab Net Assets Fund Balance TotLiabNetAssetsFundBalanceGrp

Field	Value	IRS element (for citing)
BOY	$212,738,000	BOYAmt
EOY	$212,053,000	EOYAmt

Field	Value	IRS element (for citing)
Info In Schedule O Part XI	Yes (X)	InfoInScheduleOPartXIInd
Reconcilation Revenue Expnss	$3,032,467	ReconcilationRevenueExpnssAmt
Net Unrlzd Gains Losses Invst	$4,292,208	NetUnrlzdGainsLossesInvstAmt
Other Changes In Net Assets	-$168,675	OtherChangesInNetAssetsAmt
Method Of Accounting Accrual	Yes (X)	MethodOfAccountingAccrualInd
Accountant Compile Or Review	false	AccountantCompileOrReviewInd
FS Audited	Yes (true)	FSAuditedInd

FS Audited Basis FSAuditedBasisGrp

Field	Value	IRS element (for citing)
Consol And Sep Basis Fincl Stmt	Yes (X)	ConsolAndSepBasisFinclStmtInd

Field	Value	IRS element (for citing)
Audit Committee	Yes (true)	AuditCommitteeInd
Federal Grant Audit Required	false	FederalGrantAuditRequiredInd

Schedule A IRS990ScheduleA

Field	Value	IRS element (for citing)
Public Organization170	Yes (X)	PublicOrganization170Ind

Gifts Grants Contri Rcvd170 GiftsGrantsContriRcvd170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$17,583,393	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years	$24,608,097	CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years	$21,190,270	CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year	$23,367,263	CurrentTaxYearMinus1YearAmt
Current Tax Year	$23,516,558	CurrentTaxYearAmt
Total	$110,265,581	TotalAmt

Tax Rev Levied Orgnztnl Bnft170 TaxRevLeviedOrgnztnlBnft170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$15,437,426	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years	$15,115,544	CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years	$15,178,033	CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year	$14,573,917	CurrentTaxYearMinus1YearAmt
Current Tax Year	$14,677,126	CurrentTaxYearAmt
Total	$74,982,046	TotalAmt

Total Calendar Year170 TotalCalendarYear170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$33,020,819	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years	$39,723,641	CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years	$36,368,303	CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year	$37,941,180	CurrentTaxYearMinus1YearAmt
Current Tax Year	$38,193,684	CurrentTaxYearAmt
Total	$185,247,627	TotalAmt

Field	Value	IRS element (for citing)
Substantial Contributors Tot	$4,360,904	SubstantialContributorsTotAmt
Public Support Total170	$180,886,723	PublicSupportTotal170Amt

Gross Investment Income170 GrossInvestmentIncome170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$906,995	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years	$1,014,980	CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years	$1,509,502	CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year	$1,906,637	CurrentTaxYearMinus1YearAmt
Current Tax Year	$896,735	CurrentTaxYearAmt
Total	$6,234,849	TotalAmt

Unrelated Business Net Incm170 UnrelatedBusinessNetIncm170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$11,592	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus1 Year	$29,847	CurrentTaxYearMinus1YearAmt
Current Tax Year	$40,865	CurrentTaxYearAmt
Total	$82,304	TotalAmt

Field	Value	IRS element (for citing)
Total Support	$191,564,780	TotalSupportAmt
Gross Receipts Rltd Activities	$152,323,838	GrossReceiptsRltdActivitiesAmt
Public Support CY170	0.94430	PublicSupportCY170Pct
Public Support PY170	0.94950	PublicSupportPY170Pct
Thirty Thr Pct Suprt Tests CY170	Yes (X)	ThirtyThrPctSuprtTestsCY170Ind

Schedule B IRS990ScheduleB

Contributor Information ContributorInformationGrp

Field	Value	IRS element (for citing)
Contributor	RESTRICTED	ContributorNum

Contributor Business Name ContributorBusinessName

Field	Value	IRS element (for citing)
Business Name Line1	RESTRICTED	BusinessNameLine1

Contributor US Address ContributorUSAddress

Field	Value	IRS element (for citing)
Address Line1	RESTRICTED	AddressLine1
Address Line2	RESTRICTED	AddressLine2
City	RESTRICTED	City
State	RESTRICTED	State
ZIP Code	RESTRICTED	ZIPCode

Field	Value	IRS element (for citing)
Total Contributions	RESTRICTED	TotalContributionsAmt

Schedule C IRS990ScheduleC

Field	Value	IRS element (for citing)
Volunteers	false	VolunteersInd
Paid Staff Or Management	Yes (true)	PaidStaffOrManagementInd
Media Advertisements	false	MediaAdvertisementsInd
Mailings Members	Yes (true)	MailingsMembersInd
Publications Or Broadcast	Yes (true)	PublicationsOrBroadcastInd
Grants Other Organizations	false	GrantsOtherOrganizationsInd
Direct Contact Legislators	Yes (true)	DirectContactLegislatorsInd
Direct Contact Legislators	$75,857	DirectContactLegislatorsAmt
Rallies Demonstrations	false	RalliesDemonstrationsInd
Other Activities	false	OtherActivitiesInd
Total Lobbying Expenditures	$75,857	TotalLobbyingExpendituresAmt
Not Described Section501c3	false	NotDescribedSection501c3Ind

Supplemental Information Detail SupplementalInformationDetail

Field	Value	IRS element (for citing)
Form And Line Reference	II-B 1A-J	FormAndLineReferenceDesc
Explanation	The Chicago Zoological Society is a private non profit organization that operates Brookfield Zoo on land owned by the Forest Preserve District of Cook County. Brookfield Zoo was created through an act of the Illinois Legislature and the Society annually receives partial funding from Cook County to maintain and operate the Zoo. Occasionally, the laws and regulations under which the Society was organized and is funded and operated require updating. The Society may advise and assist appropriate legislative bodies in this activity. It may also advocate the adoption or rejection of legislation. By virtue of a management agreement with the District, the Society is periodically called upon to advise on matters of public policy. The Society also employs certain staff and consultants to communicate with the State of Illinois, federal officials, county commissioners and other government officials, to inform those parties of the activities of the Society. Additionally, as required during the year, the Societys President and designated staff attend national and international professional group meetings and otherwise communicate with those groups on various matters, including the expression of opinions to appropriate congressional representatives, congressional committees or other deliberative bodies that influence public policy concerning species in danger of extinction, environmental management, the biological sciences and kindred subject, and federal regulatory agency activities affecting wildlife and its management. Also, as needed from time to time, the Society may contact its members, staff and volunteers to encourage them to express their views on pending legislation that may have a direct impact on the Society and its conservation programs.	ExplanationTxt

Schedule D IRS990ScheduleD

Field	Value	IRS element (for citing)
Funds And Other Accounts Held	2	FundsAndOtherAccountsHeldCnt
Funds And Other Accounts Contri	$345,766	FundsAndOtherAccountsContriAmt
Funds And Other Accounts Grants	$229,593	FundsAndOtherAccountsGrantsAmt
Funds And Other Accounts Vl EOY	$2,777,019	FundsAndOtherAccountsVlEOYAmt
Disclosed Org Leg Ctrl	false	DisclosedOrgLegCtrlInd
Disclosed For Charitable Prps	false	DisclosedForCharitablePrpsInd
Collection Used Pub Exhibition	Yes (X)	CollectionUsedPubExhibitionInd
Coll Used Scholarly Rsrch	Yes (X)	CollUsedScholarlyRsrchInd
Collection Used Preservation	Yes (X)	CollectionUsedPreservationInd
Coll Used Loan Or Exch Prog	Yes (X)	CollUsedLoanOrExchProgInd
Solicited Assets Sale	false	SolicitedAssetsSaleInd
Agent Trustee Etc	false	AgentTrusteeEtcInd
Incl Escrow Custodial Acct Liab	false	InclEscrowCustodialAcctLiabInd

CY Endwmt Fund CYEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$22,362,000	BeginningYearBalanceAmt
Contributions	$172,000	ContributionsAmt
Investment Earnings Or Losses	$2,998,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$927,000	OtherExpendituresAmt
Administrative Expenses	$43,000	AdministrativeExpensesAmt
End Year Balance	$24,562,000	EndYearBalanceAmt

CY Minus1 Yr Endwmt Fund CYMinus1YrEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$19,131,000	BeginningYearBalanceAmt
Contributions	$321,000	ContributionsAmt
Investment Earnings Or Losses	$3,802,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$849,000	OtherExpendituresAmt
Administrative Expenses	$43,000	AdministrativeExpensesAmt
End Year Balance	$22,362,000	EndYearBalanceAmt

CY Minus2 Yr Endwmt Fund CYMinus2YrEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$20,074,000	BeginningYearBalanceAmt
Contributions	$1,573,000	ContributionsAmt
Investment Earnings Or Losses	-$1,642,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$834,000	OtherExpendituresAmt
Administrative Expenses	$40,000	AdministrativeExpensesAmt
End Year Balance	$19,131,000	EndYearBalanceAmt

CY Minus3 Yr Endwmt Fund CYMinus3YrEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$17,699,000	BeginningYearBalanceAmt
Contributions	$342,000	ContributionsAmt
Investment Earnings Or Losses	$2,893,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$840,000	OtherExpendituresAmt
Administrative Expenses	$20,000	AdministrativeExpensesAmt
End Year Balance	$20,074,000	EndYearBalanceAmt

CY Minus4 Yr Endwmt Fund CYMinus4YrEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$16,699,000	BeginningYearBalanceAmt
Contributions	$266,000	ContributionsAmt
Investment Earnings Or Losses	$1,622,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$853,000	OtherExpendituresAmt
Administrative Expenses	$35,000	AdministrativeExpensesAmt
End Year Balance	$17,699,000	EndYearBalanceAmt

Field	Value	IRS element (for citing)
Board Designated Balance EOY	0.23000	BoardDesignatedBalanceEOYPct
Prmnnt Endowment Balance EOY	0.42000	PrmnntEndowmentBalanceEOYPct
Term Endowment Balance EOY	0.35000	TermEndowmentBalanceEOYPct
Endowments Held Unrelated Org	Yes (true)	EndowmentsHeldUnrelatedOrgInd
Endowments Held Related Org	false	EndowmentsHeldRelatedOrgInd

Leasehold Improvements LeaseholdImprovementsGrp

Field	Value	IRS element (for citing)
Other Cost Or Other Basis	$277,748,815	OtherCostOrOtherBasisAmt
Depreciation	$157,986,791	DepreciationAmt
Book Value	$119,762,024	BookValueAmt

Equipment EquipmentGrp

Field	Value	IRS element (for citing)
Other Cost Or Other Basis	$9,654,946	OtherCostOrOtherBasisAmt
Depreciation	$8,403,573	DepreciationAmt
Book Value	$1,251,373	BookValueAmt

Other Land Buildings OtherLandBuildingsGrp

Field	Value	IRS element (for citing)
Other Cost Or Other Basis	$48,950	OtherCostOrOtherBasisAmt
Book Value	$48,950	BookValueAmt

Field	Value	IRS element (for citing)
Total Book Value Land Buildings	$121,062,347	TotalBookValueLandBuildingsAmt

Other Securities OtherSecuritiesGrp (2 entries)

DescDesc
Financial derivatives and other financial products
Closely-held equity interests

Other Liabilities Org OtherLiabilitiesOrgGrp (7 entries)

DescDesc	AmtAmt
Federal income taxes
Accrued Post Retirement Benefit Obligation	$1,650,258
Accrued Sick Pay Benefit Obligation	$1,281,612
Charitable Gift Annuity Obligation	$187,403
Market Value of Swap Agreements	$769,926
Unamortized Bond Issue Costs	-$165,923
Other	-$164

Field	Value	IRS element (for citing)
Total Liability	$3,723,112	TotalLiabilityAmt
Footnote Text	Yes (X)	FootnoteTextInd
Total Rev Etc Audited Fincl Stmt	$73,277,000	TotalRevEtcAuditedFinclStmtAmt
Net Unrealized Gains Invst	$4,292,208	NetUnrealizedGainsInvstAmt
Donated Services And Use Fclts	$747,837	DonatedServicesAndUseFcltsAmt
Other Revenue	$8,418,000	OtherRevenueAmt
Revenue Not Reported	$13,458,045	RevenueNotReportedAmt
Revenue Subtotal	$59,818,955	RevenueSubtotalAmt
Investment Expenses Not Incld	$128,854	InvestmentExpensesNotIncldAmt
Other Revenues Not Included	-$103,090	OtherRevenuesNotIncludedAmt
Revenue Not Reported Fincl Stmt	$25,764	RevenueNotReportedFinclStmtAmt
Total Revenue Per Form990	$59,844,719	TotalRevenuePerForm990Amt
Tot Expns Etc Audited Fincl Stmt	$70,572,000	TotExpnsEtcAuditedFinclStmtAmt
Donated Services Use Fclts	$747,837	DonatedServicesUseFcltsAmt
Other Expenses Included	$13,140,765	OtherExpensesIncludedAmt
Expenses Not Reported	$13,888,602	ExpensesNotReportedAmt
Expenses Subtotal	$56,683,398	ExpensesSubtotalAmt
Investment Expenses Not Incld2	$128,854	InvestmentExpensesNotIncld2Amt
Expenses Not Rpt Fincl Stmt	$128,854	ExpensesNotRptFinclStmtAmt
Total Expenses Per Form990	$56,812,252	TotalExpensesPerForm990Amt

Supplemental Information Detail SupplementalInformationDetail (9 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
I 5 and 6	The Society does not maintain any donor advised funds. Other Funds consist of the Chicago Board of Trade Endangered Species Fund and the CZS Womens Board Fund. Contributions to these funds come from donors as well as proceeds from fundraising events and investment income. Grants are decided by committees as described in Schedule I. At times, donors who have given money to the fund may also sit on the granting committee but no one donor may decide on the grant awards. All grants awarded must follow the guidelines and processes established by CZS. CZS Board of Trustees has final approval of all Chicago Board of Trade Endangered Species Fund Committee recommended grant awards. CZS Management has final approval of all CZS Womens Board recommended grant awards.
III 1A	Animal Collections, which were acquired through breeding loans, purchases and contributions, are not recognized as assets on the Statement of Financial Position. Costs to acquire collection items are recorded as decreases in unrestricted net assets in the year in which the animals are acquired. Proceeds from deaccessions are reflected as increases in the appropriate net asset class. The Societys animal collection consists of specimens with numerous attributes including taxonomic group, age, sex, relationship and value to other animals, endangered status and breeding potential. The Society retains a record of every animal in a permanent file. An inventory of the collection is prepared annually. Professionally trained keeper staff and population managers provide daily care for the collection and determine population needs.
III 4	The more than 2500 ambassadors of the animal kingdom which make up the CZS collection provide our visitors a rare opportunity to see species from around the globe. The collection, in connection with our education programs, provides CZS the opportunity to teach guests about animals and nature, conservation and other related topics.
V 4	The Societys endowment consists of different funds established to support a variety of CZS programs including conservation and research, education and outreach, care of the animal collection and grounds, and general operations. Additionally, the Society is the designated beneficiary of the interest income on a 1 million endowment established and maintained by the Chicago Community Trust. The CCT maintains variance power over this endowment and, accordingly, the Society has not included it in its financial statements.
VI 1A-E	The Society operates a zoological park on land owned by the Forest Preserve District of Cook County, IL which is provided to the Society at no charge. The land site of the Zoo, accordingly, is not recorded on the Societys financial statements. All park improvements acquired by the Society are legally owned by the District. All park improvements acquired by the Society, including those acquired with District funds, are recorded as park improvements on the Societys financial statements. The amount in Other represents construction in progress on capital assets. Once a capital asset is complete and in use, the total amount for that project is closed out of construction in progress and transferred to park improvements.
X 2	The Society is a not-for-profit corporation and is exempt from tax under the provisions of Internal Revenue Code Section 501c3, except for taxes on unrelated business income. The Society has no liability for uncertain tax positions, therefore the Society does not include such a footnote as it is no longer required by generally accepted accounting principles.
XI 2d	Due to change in accounting year, audited financial statements are for a 15 month period. Portion of the audited financial statements related to short year 1/1/21-3/31/21 8,418,000
XI 4b	Other Adjustments - Cost of Sales of Inventory 11,103, fundraising event expense -114,484, Rounding and Misc adjustments 291
XII 2d	Other Adjustments - Portion of the 15 month audited financial statements related to the short year 1/1/21-3/31/21 12,701,000 Cost of Sales of Inventory -11,103, change in market value of swap agreements 336,758, fundraising event expense 114,484, Rounding and Misc adjustments -374

Schedule F IRS990ScheduleF

Field	Value	IRS element (for citing)
Grant Records Maintained	Yes (true)	GrantRecordsMaintainedInd

Account Activities Outside US AccountActivitiesOutsideUSGrp (10 entries)

RegionRegionTxt	Type Of Activities ConductedTypeOfActivitiesConductedTxt	Region Total ExpendituresRegionTotalExpendituresAmt	Specific Services ProvidedSpecificServicesProvidedTxt
Central America and the Caribbean	grants to recipients for fieldwork in region	$4,800
East Asia and the Pacific	program services	$679	attend conservation related conference
East Asia and the Pacific	grants to recipients for fieldwork in region	$58,743
Europe Including Iceland and Greenland	program services	$13,359	memberships in conservation organizations
North America	grants to recipients for fieldwork in region	$4,600
Russia and the Neighboring States	grants to recipients for fieldwork in region	$5,000
South America	program services	$1,000	memberships in conservation organizations
South America	grants to recipients for fieldwork in region	$45,768
South Asia	grants to recipients for fieldwork in region	$13,810
Sub-Saharan Africa	grants to recipients for fieldwork in region	$35,107

Field	Value	IRS element (for citing)
Subtotal Spent	$182,866	SubtotalSpentAmt
Total Spent	$182,866	TotalSpentAmt

Grants To Org Outside US GrantsToOrgOutsideUSGrp (4 entries)

RegionRegionTxt	Purpose Of GrantPurposeOfGrantTxt	Cash GrantCashGrantAmt	Manner Of Cash DisbursementMannerOfCashDisbursementTxt
East Asia and the Pacific	conservation fieldwork	$39,623	wire transfer
South America	conservation research fieldwork	$19,263	check
South America	conservation research fieldwork	$7,600	wire transfer
Sub-Saharan Africa	conservtion research fieldwork	$9,851	wire transfer

Field	Value	IRS element (for citing)
Total501c3 Org	4	Total501c3OrgCnt
Transfer To Foreign Corp	false	TransferToForeignCorpInd
Interest In Foreign Trust	false	InterestInForeignTrustInd
Foreign Corp Ownership	false	ForeignCorpOwnershipInd
Passive Foreign Investmest Co	false	PassiveForeignInvestmestCoInd
Foreign Partnership	false	ForeignPartnershipInd
Boycott Countries	false	BoycottCountriesInd

Supplemental Information Detail SupplementalInformationDetail (3 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part I Line 2	The Society awards grants through its Chicago Board of Trade Endangered Species Fund CBT ESF. The grant cycle is 2 times per year. Grant proposals are reviewed by a team of four. Proposals may be endorsed by an IUCN Species Survival Committee or other major, internationally known conservation organization, the AZA/WAZA, or other major zoo organization. For any individuals/organizations who are not US Citizens/entities, the Society checks the most recent OFAC Control List of Specifically Designated and Blocked Persons as well as the Consolidated List established and maintained by the 1267 Committee with respect to Al-Qaida, Osama Bin Laden, and the Taliban and other individuals, groups, undertakings and entities associated with them. Approximately 50,000 is awarded each cycle, usually in amounts of 2000 to 5000 per grant. Final award recommendations are presented to the Executive Committee of the Board of Trustees by the CBOT Committee members. Final reports are due 1 year after the receipt of the funds along with a final accounting of the grant funds expended. In addition, other grant funds are given by the Society to major, internationally known conservation organizations in support of their general conservation mission. These contributions are determined by Society management. They are approved by the Board either as part of the annual operating budget process or as part of a periodic spending authorization from the Societys Board Designated Conservation Fund.
Part I Line 2 contd	The Society also holds funds raised for avian conservation and pangolin conservation programs. A small number of research grants are awarded from these funds each year. The grants awarded from these funds are approved by the Avian Scientific Advisory Group and the Pangolin Consortium Group. These groups are composed of staff from the Society and other like-minded institutions. Both groups have written grant application, awarding, tracking and reporting processes in place. All grant payments approved by the groups must follow the Societys established internal procedures before payment is made.
Part I Line 3, Col F	, Part II Line 1, and Part III All expenditures are reported using the accrual method of accounting.

Schedule G IRS990ScheduleG

Field	Value	IRS element (for citing)
Mail Solicitations	Yes (X)	MailSolicitationsInd
Email Solicitations	Yes (X)	EmailSolicitationsInd
Phone Solicitations	Yes (X)	PhoneSolicitationsInd
In Person Solicitations	Yes (X)	InPersonSolicitationsInd
Solicitation Of Non Govt Grants	Yes (X)	SolicitationOfNonGovtGrantsInd
Solicitation Of Govt Grants	Yes (X)	SolicitationOfGovtGrantsInd
Special Fundraising Events	Yes (X)	SpecialFundraisingEventsInd
Agrmt Prof Fundraising Acty	Yes (true)	AgrmtProfFundraisingActyInd

Fundraiser Activity Info FundraiserActivityInfoGrp

Organization Business Name OrganizationBusinessName

Field	Value	IRS element (for citing)
Business Name Line1	Patricia Hurley and Assoc	BusinessNameLine1Txt

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	205 S Wacker Dr Suite 1400	AddressLine1Txt
City	Chicago	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60606	ZIPCd

Field	Value	IRS element (for citing)
Activity	Consulting-fundraising evt	ActivityTxt
Fundraiser Control Of Funds	false	FundraiserControlOfFundsInd
Gross Receipts	$1,369,886	GrossReceiptsAmt
Retained By Contractor	$41,243	RetainedByContractorAmt
Net To Organization	$1,328,643	NetToOrganizationAmt

Field	Value	IRS element (for citing)
Total Gross Receipts	$1,369,886	TotalGrossReceiptsAmt
Total Retained By Contractors	$41,243	TotalRetainedByContractorsAmt
Total Net To Organization	$1,328,643	TotalNetToOrganizationAmt
Licensed States	FL	LicensedStatesCd
Licensed States	IL	LicensedStatesCd
Licensed States	IN	LicensedStatesCd
Licensed States	WI	LicensedStatesCd

Fundraising Event Information FundraisingEventInformationGrp

Field	Value	IRS element (for citing)
Event1	Whirl Virtual Gala	Event1Nm
Gross Receipts Event1	$1,369,886	GrossReceiptsEvent1Amt
Charitable Contri Event1	$1,151,086	CharitableContriEvent1Amt
Gross Revenue Event1	$218,800	GrossRevenueEvent1Amt
Non Cash Prizes Event1	$3,547	NonCashPrizesEvent1Amt
Other Direct Expenses Event1	$137,659	OtherDirectExpensesEvent1Amt
Event2	Conservation Awards Virtual Celebration	Event2Nm
Gross Receipts Event2	$186,050	GrossReceiptsEvent2Amt
Charitable Contri Event2	$185,030	CharitableContriEvent2Amt
Gross Revenue Event2	$1,020	GrossRevenueEvent2Amt
Non Cash Prizes Event2	$363	NonCashPrizesEvent2Amt
Other Direct Expenses Event2	$10,544	OtherDirectExpensesEvent2Amt
Other Events Total	1	OtherEventsTotalCnt
Gross Receipts Other Events	$37,181	GrossReceiptsOtherEventsAmt
Gross Revenue Other Events	$37,181	GrossRevenueOtherEventsAmt
Non Cash Prizes Other Events	$14,871	NonCashPrizesOtherEventsAmt
Oth Direct Expnss Other Events	$7,953	OthDirectExpnssOtherEventsAmt
Gross Receipts Total	$1,593,117	GrossReceiptsTotalAmt
Charitable Contributions Tot	$1,336,116	CharitableContributionsTotAmt
Gross Revenue Total Events	$257,001	GrossRevenueTotalEventsAmt
Non Cash Prizes Total Events	$18,781	NonCashPrizesTotalEventsAmt
Oth Direct Expnss Total Events	$156,156	OthDirectExpnssTotalEventsAmt
Direct Expense Summary Events	$174,937	DirectExpenseSummaryEventsAmt
Net Income Summary	$82,064	NetIncomeSummaryAmt

Schedule I IRS990ScheduleI

Field	Value	IRS element (for citing)
Grant Records Maintained	Yes (true)	GrantRecordsMaintainedInd

Recipient Table RecipientTable

Recipient Business Name RecipientBusinessName

Field	Value	IRS element (for citing)
Business Name Line1	Global Wildlife Conservation	BusinessNameLine1Txt

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	PO Box 129	AddressLine1Txt
City	Austin	CityNm
State Abbreviation	TX	StateAbbreviationCd
ZIP	78767	ZIPCd

Field	Value	IRS element (for citing)
Recipient EIN	262887967	RecipientEIN
IRC Section	501c3	IRCSectionDesc
Cash Grant	$25,000	CashGrantAmt
Purpose Of Grant	general operating support	PurposeOfGrantTxt

Field	Value	IRS element (for citing)
Total501c3 Org	1	Total501c3OrgCnt

Grants Other Asst To Indiv In US GrantsOtherAsstToIndivInUSGrp

Field	Value	IRS element (for citing)
Grant Type	Educ. Scholarship for Conservation Education	GrantTypeTxt
Recipient	5	RecipientCnt
Cash Grant	$25,000	CashGrantAmt

Supplemental Information Detail SupplementalInformationDetail

Field	Value	IRS element (for citing)
Form And Line Reference	Part I Line 2	FormAndLineReferenceDesc
Explanation	CZS awards grants and assistance through a variety of programs. For awards under the CBT ESF and Avian and Pangolin Conservation Programs, as well as general contributions to major conservation organizations, see details in Schedule F, part V. CZS also provides grants and assistance through its educational scholarship programs. CZS maintains records to substantiate amounts, elegibility and selection criteria. Procedures are in place to monitor grants to ensure they are used for proper purposes including, where applicable, periodic reporting by the grantee.	ExplanationTxt

Schedule J IRS990ScheduleJ

Field	Value	IRS element (for citing)
Idemnification Gross Up Pmts	Yes (X)	IdemnificationGrossUpPmtsInd
Housing Allowance Or Residence	Yes (X)	HousingAllowanceOrResidenceInd
Written Policy Ref T And E Expnss	Yes (true)	WrittenPolicyRefTAndEExpnssInd
Substantiation Required	Yes (true)	SubstantiationRequiredInd
Compensation Committee	Yes (X)	CompensationCommitteeInd
Independent Consultant	Yes (X)	IndependentConsultantInd
Form990 Of Other Organizations	Yes (X)	Form990OfOtherOrganizationsInd
Compensation Survey	Yes (X)	CompensationSurveyInd
Board Or Committee Approval	Yes (X)	BoardOrCommitteeApprovalInd
Severance Payment	Yes (true)	SeverancePaymentInd
Supplemental Nonqual Rtr Plan	Yes (true)	SupplementalNonqualRtrPlanInd
Equity Based Comp Arrngm	false	EquityBasedCompArrngmInd
Comp Based On Revenue Of Flng Org	false	CompBasedOnRevenueOfFlngOrgInd
Comp Bsd On Rev Related Orgs	false	CompBsdOnRevRelatedOrgsInd
Comp Bsd Net Earns Flng Org	false	CompBsdNetEarnsFlngOrgInd
Comp Bsd Net Earns Rltd Orgs	false	CompBsdNetEarnsRltdOrgsInd
Any Non Fixed Payments	false	AnyNonFixedPaymentsInd
Initial Contract Exception	false	InitialContractExceptionInd

Rltd Org Officer Trst Key Empl RltdOrgOfficerTrstKeyEmplGrp (11 entries)

TitleTitleTxt	Base Compensation Filing OrgBaseCompensationFilingOrgAmt	Other Compensation Filing OrgOtherCompensationFilingOrgAmt	Deferred Compensation Flng OrgDeferredCompensationFlngOrgAmt	Nontaxable Benefits Filing OrgNontaxableBenefitsFilingOrgAmt	Total Compensation Filing OrgTotalCompensationFilingOrgAmt	Comp Report Prior990 Filing OrgCompReportPrior990FilingOrgAmt
Stuart D Strahl PhD
President and CEO	$478,431	$345,296	$16,430	$22,904	$863,061	$284,814
Richard G Gamble
Chief Operating Officer through 6/20	$160,975	$211,521	$5,850	$32,326	$410,672
Cynthia W Zeigler
Chief Advancement Officer	$317,943	$9,554	$6,035	$22,391	$355,923
David E Burns
Chief Financial and Admin. Officer	$260,414	$2,526	$7,493	$22,158	$292,591
Sarah Breen-Bartecki
Sr. VP Conserv Pgms, ResearchFunding	$233,766	$3,991	$7,154	$9,444	$254,355
Frank W Zeigler
Sr. VP Animal Programs	$224,919	$10,179	$5,571	$8,750	$249,419
Mary A Cronin
Master Planning Coordinator	$203,846				$203,846
Michael Owens
VP Information Technology	$186,417	$4,288	$4,598	$3,685	$198,988
Leah Rippe
VP Marketing Communications	$183,325	$2,188	$5,738	$32,624	$223,875
Jerome E Johnston
VP Guest Services Operations	$173,217	$1,827	$5,243	$6,309	$186,596
Sandra L Dornhecker
Sr. VP Human Resources	$169,262	$5,407	$2,659	$21,912	$199,240

Supplemental Information Detail SupplementalInformationDetail (3 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part I Line 1a	As provided for in the executive employment agreement approved by the Board of Trustees, the President received a housing allowance and a gross up payment equivalent to the tax obligation for the value of the Society provided life insurance. Both were treated as taxable compensation to the President.
Part I Line 4a	As provided for in the Severance Agreement with the Chief Operating Officer related to the elimination of the position, he received a severance payment of 160,650.
Part I Line 4b	As provided for in the CZS Deferred Compensation Plan and as approved by the Board of Trustees, an interest credit was made to the Plan on behalf of the President in the amount of 7,880. Also, as provided for in the CZS Deferred Compensation Plan, a payout was made to the President of previously deferred compensation in the amount of 292,694. This deferred compensation was accrued over a 9 year period from 2012 through 2020. 284,814 of the total payout 292,694 was previously reported as deferred compensation on the appropriate prior years 990 Schedule J.

Schedule K IRS990ScheduleK

Tax Exempt Bonds Issues TaxExemptBondsIssuesGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd

Issuer Name IssuerName

Field	Value	IRS element (for citing)
Business Name Line1	Village of Brookfield Cook County IL	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Bond Issuer EIN	366005807	BondIssuerEIN
CUSIP	112732AAO	CUSIPNum
Bond Issued	2008-06-18	BondIssuedDt
Issue Price	$39,850,000	IssuePriceAmt
Purpose	Construction and renovation of certain buildings and exhibits	PurposeDesc
Defeased	false	DefeasedInd
On Behalf Of Issuer	false	OnBehalfOfIssuerInd
Pool Financing	false	PoolFinancingInd

Tax Exempt Bonds Proceeds TaxExemptBondsProceedsGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd
Retired	$10,930,000	RetiredAmt
Total Proceeds	$39,850,000	TotalProceedsAmt
Capitalized Interest	$595,445	CapitalizedInterestAmt
Issuance Costs From Proceeds	$296,598	IssuanceCostsFromProceedsAmt
Capital Expenditures	$30,539,559	CapitalExpendituresAmt
Substantial Completion	2010	SubstantialCompletionYr
Refunding Tax Exempt Bonds	false	RefundingTaxExemptBondsInd
Refunding Taxable Bonds	false	RefundingTaxableBondsInd
Final Allocation Made	Yes (true)	FinalAllocationMadeInd
Adequate Books And Rec Maint	Yes (true)	AdequateBooksAndRecMaintInd

Tax Exempt Bonds Private Bus Use TaxExemptBondsPrivateBusUseGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd
Owning Bond Financed Property	false	OwningBondFinancedPropertyInd
Any Lease Arrangements	false	AnyLeaseArrangementsInd
Mgmt Contract Bond Fincd Prop	false	MgmtContractBondFincdPropInd
Any Research Agreements	false	AnyResearchAgreementsInd
Bond Iss Meet Prvt Sec Pymt Test	false	BondIssMeetPrvtSecPymtTestInd
Change In Use Bond Financed Prop	false	ChangeInUseBondFinancedPropInd
Procs Nonqualified Bond Remdtd	Yes (true)	ProcsNonqualifiedBondRemdtdInd

Tax Exempt Bonds Arbitrage TaxExemptBondsArbitrageGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd
Form8038 T Filed	false	Form8038TFiledInd
No Rebate Due	Yes (true)	NoRebateDueInd
Variable Rate Issue	Yes (true)	VariableRateIssueInd
Hedge Identified In Bks And Rec	Yes (true)	HedgeIdentifiedInBksAndRecInd

Hedge Provider Name HedgeProviderName

Field	Value	IRS element (for citing)
Business Name Line1	The Northern Trust Co	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Term Of Hedge	0000000010.000000000000	TermOfHedgePct
Superintegrated Hedge	false	SuperintegratedHedgeInd
Hedge Terminated	false	HedgeTerminatedInd
Gross Proceeds Invested In GIC	false	GrossProceedsInvestedInGICInd
Gross Proceeds Invested	false	GrossProceedsInvestedInd
Written Proc To Monitor Reqs	Yes (true)	WrittenProcToMonitorReqsInd

Procedures Corrective Action ProceduresCorrectiveActionGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd
Procedures Corrective Action	Yes (true)	ProceduresCorrectiveActionInd

Supplemental Information Detail SupplementalInformationDetail (2 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part II Line 11A	Some proceeds of the bonds were used to retire a portion of the bonds as reported in Part II, Line 1A
Part IV Line 2c	Column A The rebate calculation was performed by an independent rebate consultant in March 2013 indicating no rebate was due and advising that as long as all assumptions remained true it was no longer necessary to compute excess with respect to these bonds.

Schedule L IRS990ScheduleL

Bus Tr Involve Interested Prsn BusTrInvolveInterestedPrsnGrp (2 entries)

Relationship DescriptionRelationshipDescriptionTxt	TransactionTransactionAmt	TransactionTransactionDesc	Sharing Of RevenuesSharingOfRevenuesInd
Cynthia W Zeigler
Family Member of Key Employee	$355,923	employment	false
Frank W Zeigler
Family Member of Key Employee	$249,419	employment	false

Supplemental Information Detail SupplementalInformationDetail (2 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part IV Line 1	During 2020, Cynthia W. Zeigler was employed as Chief Advancement Officer. She is a family member of key employee Frank W. Zeigler. Her employment follows the Societys established recruiting, hiring and compensation policies.
Part IV Line 2	During 2020, Frank W. Zeigler was employed as Sr. VP Animal Programs. He is a family member of key employee Cynthia W. Zeigler. His employment follows the Societys established recruiting, hiring and compensation policies.

Schedule M IRS990ScheduleM

Boats And Planes BoatsAndPlanesGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Contribution	1	ContributionCnt
Noncash Contributions Rpt F990	$42,300	NoncashContributionsRptF990Amt
Method Of Determining Revenues	appraisal	MethodOfDeterminingRevenuesTxt

Securities Publicly Traded SecuritiesPubliclyTradedGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Contribution	31	ContributionCnt
Noncash Contributions Rpt F990	$3,193,606	NoncashContributionsRptF990Amt
Method Of Determining Revenues	price of stock on gift date	MethodOfDeterminingRevenuesTxt

Food Inventory FoodInventoryGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Contribution	3	ContributionCnt
Noncash Contributions Rpt F990	$7,976	NoncashContributionsRptF990Amt
Method Of Determining Revenues	cost or selling price	MethodOfDeterminingRevenuesTxt

Drugs And Medical Supplies DrugsAndMedicalSuppliesGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Contribution	1	ContributionCnt
Noncash Contributions Rpt F990	$4,400	NoncashContributionsRptF990Amt
Method Of Determining Revenues	cost or selling price	MethodOfDeterminingRevenuesTxt

Scientific Specimens ScientificSpecimensGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Contribution	22	ContributionCnt

Other Non Cash Contri Table OtherNonCashContriTableGrp (3 entries)

Non Cash CheckboxNonCashCheckboxInd	DescDesc	ContributionContributionCnt	Noncash Contributions Rpt F990NoncashContributionsRptF990Amt	Method Of Determining RevenuesMethodOfDeterminingRevenuesTxt
Yes (X)	Operating supplies	40	$571,117	cost or selling price
Yes (X)	Charity Auction Items	35	$60,453	cost or selling price
Yes (X)	Medical Equipment	3	$52,200	cost or selling price

Field	Value	IRS element (for citing)
Form8283 Received	2	Form8283ReceivedCnt
Any Property That Must Be Held	false	AnyPropertyThatMustBeHeldInd
Review Process Unusual NC Gifts	Yes (true)	ReviewProcessUnusualNCGiftsInd
Third Parties Used	Yes (true)	ThirdPartiesUsedInd

Supplemental Information Detail SupplementalInformationDetail (3 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part I Line Line 32b	The Society has an agreement with IDonate to process certain non cash donations on behalf of the Society. Donors donate their items to IDonate Foundation/Servant Foundation, a 501c3 organization, who sells the items, retains a commission and issues a cash grant to the Society for the remainder.
Part I Line 33	Securities Current year contributions of stock which represent payments on pledges recorded as contribution in a previous year are not included in the revenue shown on Form 990, Part VIII, Line 1g. Stock gifts which represent payments of Conditional Contributions for which the conditions for revenue recogntion have not yet been met are also not included in the revenue shown on Form 990, Part VIII, Line 1g.
Part I Line 33	Collection Items/Scientific Specimens A zero dollar amount was reported on Form 990, Part VIII, Line 1g because the Society does not capitalize its collection, as allowed under SFAS 116.

Schedule O IRS990ScheduleO

Supplemental Information Detail SupplementalInformationDetail (11 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Form 990, Part V, Section A, Line 1A	The fiscal, general oversight, and policies of the Society are vested in a Board of not more than 58 Trustees. As of December 31, 2020, there were 45 voting Trustess. The elected Officers of the Board, the chairs of the standing committees and such other Trustees as may be appointed by the Chairman constitute the Executive Committee. The Executive Committee has the power to transact all regular business of the Society during the period between the regular Board meetings.
Form 990, Part VI, Section A, Line 2	Cindy Zeigler, Key Employee and Frank Zeigler, Key Employee - Family Relationship.
Form 990, Part VI, Section A, Line 6	The membership of the Society is composed of up to 250 Governing Members. Up to 55 of the 58 Board of Trustees are elected by the Governing Members at their annual meeting. Governing Members are also eligible for appointment by the Societys Chairman to serve on Board committees other than the Exectuive Committee. Governing Members are chosen by the Nominating Committee of the Board of Trustees and voted on by the full Board of Trustees.
Form 990, Part VI, Section A, Line 7A	The membership of the Society is composed of up to 250 Governing Members. Up to 55 of the 58 Board of Trustees are elected by the Governing Members at their annual meeting. Governing Members are also eligible for appointment by the Societys Chairman to serve on the Board committees other than the Executive Committee. Governing Members are chosen by the Nominating and Govenance Committee of the Board of Trustees and voted on by the full Board of Trustees.
Form 990, Part VI, Section B, Line 11B	The IRS Form 990 is prepared by Societys management and reviewed and signed by the Societys tax advisor. The Form 990, excluding Schedule B-Schedule of Contributors, is also reviewed by the Audit Committee of the Board of Trustees. A copy of the entire final version of the form, excluding Schedule B, is also made available to the Board of Trustees prior to filing with the IRS. Schedule B is excluded from Audit Committee and Board of Trustee review to honor the wishes of certain large donors who wish to remain anonomous in their giving.
Form 990, Part VI, Section B, Line 12C	Annually, a conflict of interest form is sent out to all members of the Board of Trustess, Key Employees and any employee with purchasing authority. The form covers potential conflicts through financial interests, use of Society services, priviledged information and representation of Society interests. It also covers specific disclosures required by the IRS Form 990 and the Illinois AG990IL. Board of Trustees responses are reviewed by the Secretary of the Board and the Chief Financial Officer who together determine if a conflict exists. Employee responses are reviewed by the VP Human Resources and the Chief Financial Officer. Any conflicts are addressed to ensure that all internal procedures are followed for any transactions with that individual and that all items requiring disclosure are properly noted. Any Board members with a conflict must abstain from voting on decisions involving the transaction in question. Any transactions entered into with interested parties follow the Societys established procurement policies and are provided at rates competitive with market rates.
Form 990, Part VI, Section B, Line 15A and 15B	The Societys policy for approval of compensation arrangements with officers and certain senior employees requires review and approval of the compensation arrangement by the Executive Committee of the Board, excluding anyone who is related to or under the control of the person involved in the arrangement. The Committee relies on appropriate comparability data which indicates the types and levels of similar compensation and benefit packages for similar positions provided by similar organizations. The Committee documents the basis for its determination of the reasonableness of compensation. This process is done annually for the President, Sr. VP of Operatons, Chief Financial Officer and the Chief Advancement Officer any year where there is an increase in compensation.
Form 990, Part VI, Section C, Line 19	Governing documents are available through applicable governmental agencies the conflict of interest policy and financial statements are available upon written request to the Society.
Form 990, Part XI, Line 9	Other Changes in net assets or fund balances Changes in Post Retirement Benefits not yet recognized in operations 167,241 change in market value of swap agreements -336,758 rounding and other 842.
Form 990, Part VI, Section A, Line 3	Effective February 2020, all restaurant, retail and catering operations were outsourced to a third party service provider.
Form 990, Part III, Line 3	On March 11, 2020, the World Health Organization declared the outbreak of a respiratory disease caused by a new coronavirus a pandemic. First identified in late 2019 and known now as COVID-19, the oubreak has impacted millions of individuals worldwide. In response, many countries implemented measures to combat the outbreak that have impacted global business operations. As a result of the pandemic, the Society has experienced significant reductions in earned revenue through retail services, visitor services and membership due to facility closures during 2020.