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      <Form990PartVIISectionAGrp>
        <PersonNm>Jon C Creyts PhD</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>002.00</AverageHoursPerWeekRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Lawrence E DeMar</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>002.00</AverageHoursPerWeekRt>
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        <PersonNm>Michael F DeSantiago</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>002.00</AverageHoursPerWeekRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Diane V Dygert</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Joan M Etten-Krall</PersonNm>
        <TitleTxt>Trustee through 5/13</TitleTxt>
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        <PersonNm>Arthur J Fogel</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Richard G Gamble</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Bert A Getz Jr</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Graham C Grady</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Philip Lee Harris</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Christine E Holden</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>William L Hood Jr</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Heidi A Huizenga</PersonNm>
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        <PersonNm>Sakeba Issa MD</PersonNm>
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        <PersonNm>Jill V Javors</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Lisa N Johnson</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Barbara Levy Kipper</PersonNm>
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        <PersonNm>Kevin W Kirby</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Angelo C Kleronomos</PersonNm>
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        <PersonNm>Fred A Krehbiel</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Anil Kumar</PersonNm>
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        <PersonNm>William O Lipinski</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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        <PersonNm>Mary Ann S MacLean</PersonNm>
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        <PersonNm>Jerry Manne</PersonNm>
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        <PersonNm>Grant G McCullagh</PersonNm>
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        <PersonNm>Christian B McGrath</PersonNm>
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        <PersonNm>Andrew J McKenna Jr</PersonNm>
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        <PersonNm>Toni Reed Preckwinkle</PersonNm>
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        <PersonNm>David K Reyes</PersonNm>
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        <PersonNm>Philip J Rock</PersonNm>
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        <PersonNm>Mark G Sander</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Nan Schaffer DVM</PersonNm>
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        <PersonNm>Kathryn Babcock Shaffer</PersonNm>
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        <PersonNm>John W Taylor III</PersonNm>
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        <PersonNm>Kenneth N Thompson</PersonNm>
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        <PersonNm>William E Thonn</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Christopher D Traut</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Cynthia W Zeigler</PersonNm>
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        <PersonNm>Kenneth S Kaduk</PersonNm>
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        <PersonNm>Dr Alejandro Grajal</PersonNm>
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        <PersonNm>Frank W Zeigler</PersonNm>
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        <PersonNm>Joseph Couceiro</PersonNm>
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        <PersonNm>Sarah Breen-Bartecki</PersonNm>
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        <PersonNm>Matthew Mayer</PersonNm>
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        <PersonNm>Jerome Johnston</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Sandra Dornhecker</PersonNm>
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            <BusinessNameLine1>FH PaschenSN Neilsen &amp; Assoc LLC</BusinessNameLine1>
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        <ExplanationTxt>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>
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        <FormAndLineReferenceDesc>I 5 and 6</FormAndLineReferenceDesc>
        <ExplanationTxt>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.</ExplanationTxt>
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        <FormAndLineReferenceDesc>III 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>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.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>III 4</FormAndLineReferenceDesc>
        <ExplanationTxt>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.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>V 4</FormAndLineReferenceDesc>
        <ExplanationTxt>The Societys endowment consists of 11 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.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>VI 1A-E</FormAndLineReferenceDesc>
        <ExplanationTxt>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.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>X 2</FormAndLineReferenceDesc>
        <ExplanationTxt>The Societys application of accounting principles generally accepted in the United States of America GAAP regarding uncertain tax positions had no effect on its financial position as management believes the Society has no material unrecognized income tax benefits, including any potential risk of loss of its not-for-profit status. The Society would account for any potential interest or penalties related to possible future liabilities for unrecognized income tax benefits as income tax expense. The Society is no longer subject to examination by federal, state, or local tax authorities for periods before 2010.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>XI 4b</FormAndLineReferenceDesc>
        <ExplanationTxt>Other Adjustments - Cost of Sales of Inventory -3,527,694, fundraising event expense -784,413, raffle expense -12,923, Rounding and Misc adjustments 3,233</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>XII 2d</FormAndLineReferenceDesc>
        <ExplanationTxt>Other Adjustments - Cost of Sales of Inventory 3,527,694, change in market value of swap agreements -934,498, fundraising event expense 784,413, raffle expense 12,923, Rounding and Misc adjustments -2818</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>IV 2B</FormAndLineReferenceDesc>
        <ExplanationTxt>During 2012, CZS acted as fiscal agent for certain subgroups of the AZA Species Survival Plan Groups, Taxon Advisory Groups, Strategic Action Groups or other similar groups where the current Chair of the group is a CZS employee. The funds are tracked separately on CZSs books as an offsetting asset and liability. Funds expended from these accounts are subject to the same policies as other CZS expenses. If the Chair of the group changes or moves to another institution, the funds are transferred to that institution.</ExplanationTxt>
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        <RegionTxt>East Asia and the Pacific</RegionTxt>
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        <RegionTxt>Sub-Saharan Africa</RegionTxt>
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        <ExplanationTxt>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 approximately 20 reviewers. All proposals must 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 CBT ESF Committee members. Status reports are required from recipients 6 months after the receipt of the funds. 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.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I Line 3, Col F</FormAndLineReferenceDesc>
        <ExplanationTxt>, Part II Line 1, and Part III All expenditures are reported using the accrual method of accounting.</ExplanationTxt>
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          <City>Chicago</City>
          <State>IL</State>
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        <ActivityTxt>Consulting-fund raising dinners</ActivityTxt>
        <FundraiserControlOfFundsInd>false</FundraiserControlOfFundsInd>
        <GrossReceiptsAmt>1792361</GrossReceiptsAmt>
        <RetainedByContractorAmt>119817</RetainedByContractorAmt>
        <NetToOrganizationAmt>1672544</NetToOrganizationAmt>
      </FundraiserActivityInfoGrp>
      <TotalGrossReceiptsAmt>1792361</TotalGrossReceiptsAmt>
      <TotalRetainedByContractorsAmt>119817</TotalRetainedByContractorsAmt>
      <TotalNetToOrganizationAmt>1672544</TotalNetToOrganizationAmt>
      <LicensedStatesCd>FL</LicensedStatesCd>
      <LicensedStatesCd>IL</LicensedStatesCd>
      <LicensedStatesCd>IN</LicensedStatesCd>
      <LicensedStatesCd>WI</LicensedStatesCd>
      <FundraisingEventInformationGrp>
        <NameOfEvent1Amt>Whirl Gala</NameOfEvent1Amt>
        <GrossReceiptsEvent1Amt>1328046</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>1151960</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>176086</GrossRevenueEvent1Amt>
        <RentFacilityCostsEvent1Amt>193771</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>84431</FoodAndBeverageEvent1Amt>
        <EntertainmentEvent1Amt>10000</EntertainmentEvent1Amt>
        <OtherDirectExpensesEvent1Amt>230363</OtherDirectExpensesEvent1Amt>
        <NameOfEvent2Amt>Conservation Awards Dinner</NameOfEvent2Amt>
        <GrossReceiptsEvent2Amt>464315</GrossReceiptsEvent2Amt>
        <CharitableContriEvent2Amt>434759</CharitableContriEvent2Amt>
        <GrossRevenueEvent2Amt>29556</GrossRevenueEvent2Amt>
        <RentFacilityCostsEvent2Amt>8865</RentFacilityCostsEvent2Amt>
        <FoodAndBeverageEvent2Amt>26152</FoodAndBeverageEvent2Amt>
        <EntertainmentEvent2Amt>15000</EntertainmentEvent2Amt>
        <OtherDirectExpensesEvent2Amt>57971</OtherDirectExpensesEvent2Amt>
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        <CharitableContriOtherEventsAmt>195339</CharitableContriOtherEventsAmt>
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        <NonCashPrizesOtherEventsAmt>6105</NonCashPrizesOtherEventsAmt>
        <FoodAndBeverageOtherEventsAmt>31879</FoodAndBeverageOtherEventsAmt>
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        <GrossReceiptsTotalAmt>2173971</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>1782058</CharitableContributionsTotAmt>
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        <NonCashPrizesTotalEventsAmt>6105</NonCashPrizesTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>202636</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>142462</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>25000</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>408210</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>784413</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-392500</NetIncomeSummaryAmt>
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      <GamingInformationGrp>
        <GrossRevenueOtherGamingAmt>37650</GrossRevenueOtherGamingAmt>
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        <OthDirectExpnssOtherGamingAmt>173</OthDirectExpnssOtherGamingAmt>
        <VolunteerLaborOtherGamingInd>true</VolunteerLaborOtherGamingInd>
        <VolunteerLaborOtherGamingPct>0.80000</VolunteerLaborOtherGamingPct>
        <GrossRevenueTotalGamingAmt>37650</GrossRevenueTotalGamingAmt>
        <NonCashPrizesTotalGamingAmt>12750</NonCashPrizesTotalGamingAmt>
        <OthDirectExpnssTotalGamingAmt>173</OthDirectExpnssTotalGamingAmt>
        <DirectExpenseSummaryGamingAmt>12923</DirectExpenseSummaryGamingAmt>
        <NetGamingIncomeSummaryAmt>24727</NetGamingIncomeSummaryAmt>
      </GamingInformationGrp>
      <StatesWhereGamingConductedCd>IL</StatesWhereGamingConductedCd>
      <LicensedInd>true</LicensedInd>
      <LicenseSuspendedEtcInd>false</LicenseSuspendedEtcInd>
      <GamingWithNonmembersInd>true</GamingWithNonmembersInd>
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      <IndividualWithBooksNm>H Bilcer Mgr FinOper Analysis</IndividualWithBooksNm>
      <PersonsWithBooksUSAddress>
        <AddressLine1>3300 Golf Rd</AddressLine1>
        <City>Brookfield</City>
        <State>IL</State>
        <ZIPCode>60513</ZIPCode>
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      <CntrctWith3rdPrtyForGameRevInd>false</CntrctWith3rdPrtyForGameRevInd>
      <GamingManagerPersonNm>C Zeigler</GamingManagerPersonNm>
      <GamingManagerCompensationAmt>671</GamingManagerCompensationAmt>
      <GamingManagerServicesProvTxt>As Sr. VP Advancement, Ms. Zeigler spent a small amt of her time supervising the raffle</GamingManagerServicesProvTxt>
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      <CharitableDistributionRqrInd>false</CharitableDistributionRqrInd>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1>Conservation Breeding Specialist Group-Global Conservation Network</BusinessNameLine1>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1>12101 Johnny Cake Ridge Rd</AddressLine1>
          <City>Apple Valley</City>
          <State>MN</State>
          <ZIPCode>55124</ZIPCode>
        </USAddress>
        <RecipientEIN>411719362</RecipientEIN>
        <IRCSectionDesc>501c3</IRCSectionDesc>
        <CashGrantAmt>20000</CashGrantAmt>
        <PurposeOfGrantTxt>general operating spt conservation</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1>The National Elephant Center</BusinessNameLine1>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1>8225 N Wickham Rd</AddressLine1>
          <City>Melbourne</City>
          <State>FL</State>
          <ZIPCode>32940</ZIPCode>
        </USAddress>
        <RecipientEIN>205860576</RecipientEIN>
        <IRCSectionDesc>501c3</IRCSectionDesc>
        <CashGrantAmt>50000</CashGrantAmt>
        <PurposeOfGrantTxt>general operating spt conservation</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1>Vital Ground Foundation</BusinessNameLine1>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1>Bldg 2-T Fort MIssoula Rd</AddressLine1>
          <City>Missoula</City>
          <State>MT</State>
          <ZIPCode>59804</ZIPCode>
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        <RecipientEIN>870483446</RecipientEIN>
        <IRCSectionDesc>501c3</IRCSectionDesc>
        <CashGrantAmt>15000</CashGrantAmt>
        <PurposeOfGrantTxt>general operating spt conservation</PurposeOfGrantTxt>
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      <Total501c3OrgCnt>3</Total501c3OrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Educ. Scholarship for Conservation Education Studies</GrantTypeTxt>
        <RecipientCnt>5</RecipientCnt>
        <CashGrantAmt>12500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Conservation related fieldwork</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>5000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>CZS awards grants and assistance through a variety of programs. For awards under the CBT ESF program, 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 and bus stipends 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>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
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      <SubstantiationRequiredInd>true</SubstantiationRequiredInd>
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
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      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
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      <InitialContractExceptionInd>false</InitialContractExceptionInd>
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        <PersonNm>Stuart D Strahl PhD</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Cynthia W Zeigler</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Joseph Couceiro</PersonNm>
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        <PersonNm>Sarah Breen-Bartecki</PersonNm>
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        <PersonNm>Matthew Mayer</PersonNm>
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        <OtherCompensationFilingOrgAmt>50</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>2487</DeferredCompensationFlngOrgAmt>
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        <PersonNm>Jerome Johnston</PersonNm>
        <TitleTxt>VP Guest Services Operations</TitleTxt>
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        <OtherCompensationFilingOrgAmt>5254</OtherCompensationFilingOrgAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Sandra Dornhecker</PersonNm>
        <TitleTxt>VP Human Resources</TitleTxt>
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        <OtherCompensationFilingOrgAmt>7464</OtherCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>3947</DeferredCompensationFlngOrgAmt>
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        <FormAndLineReferenceDesc>Part I Line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>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.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I Line 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>As provided for in the CZS Deferred Compensation Plan and as approved by the Board of Trustees, a deferred contribution plus interest credit was made to the Plan on behalf of the President in the amount of 51,338.</ExplanationTxt>
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        <BondReferenceCd>B</BondReferenceCd>
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          <BusinessName>
            <BusinessNameLine1>The Northern Trust Co</BusinessNameLine1>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Trustee Arthur J. Fogel serves as Executive VP/Managing Director</RelationshipDescriptionTxt>
        <TransactionAmt>400567</TransactionAmt>
        <TransactionDesc>Banking, Investment and LC services</TransactionDesc>
        <SharingOfRevenuesInd>false</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1>Primera Engineers Limited</BusinessNameLine1>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Trustee Michael F. DeSantiago serves as President/Co-owner</RelationshipDescriptionTxt>
        <TransactionAmt>235335</TransactionAmt>
        <TransactionDesc>Engineering and Construction Mgt services</TransactionDesc>
        <SharingOfRevenuesInd>false</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1>Cynthia W Zeigler</BusinessNameLine1>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Family member of key employee</RelationshipDescriptionTxt>
        <TransactionAmt>309356</TransactionAmt>
        <TransactionDesc>employment</TransactionDesc>
        <SharingOfRevenuesInd>false</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1>Frank W Zeigler</BusinessNameLine1>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Family member of key employee</RelationshipDescriptionTxt>
        <TransactionAmt>191749</TransactionAmt>
        <TransactionDesc>employment</TransactionDesc>
        <SharingOfRevenuesInd>false</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1>Nicor Gas</BusinessNameLine1>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Trustee Kevin W. Kirby serves as an Officer of Nicor Gas</RelationshipDescriptionTxt>
        <TransactionAmt>918309</TransactionAmt>
        <TransactionDesc>gas purchases</TransactionDesc>
        <SharingOfRevenuesInd>false</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part IV Line 1</FormAndLineReferenceDesc>
        <ExplanationTxt>During 2013, the Society used Freeborn Peters LLP for legal services. Secretary of the Board Randall G. Vickery serves as a Partner of Freeborn Peters. This transaction followed the Societys established procurement policy and rates are competitive with market rates.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part IV Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>During 2013, the Society used The Northern Trust Company for banking, investment and letter of credit services. Trustee Arthur J. Fogel serves as an Executive VP and Managing Partner at Northern Trust. This transaction followed the Societys established procurement policy and rates are competitive with market rates.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part IV Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>During 2013, the Society used Primera Engineers Limited for engineering and construction management services. Trustee Michael F. DeSantiago is President and Co-owner of Primera. This transaction followed the Societys established procurement policy and rates are competitive with market rates.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part IV Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>During 2013, Cynthia W. Zeigler was employed as Sr. VP of Institutional Advancement. She is a family member of key employee Frank W. Zeigler. Her employment follows the Societys established recruiting, hiring and compensation policies.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part IV Line 5</FormAndLineReferenceDesc>
        <ExplanationTxt>During 2013, Frank W. Zeigler was employed as Sr. VP Collection and Animal Care. He is a family member of key employee Cynthia W. Zeigler. His employment follows the Societys established recruiting, hiring and compensation policies.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part IV Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>During 2013, the Society used Nicor Gas and Nicor Enerchange for gas purchases. Trustee Kevin W. Kirby is an Officer with Nicor Gas. This transaction followed established procurement policy and rates are competitive with market rates.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="990M" softwareId="13000230" softwareVersion="13.6.0.0">
      <WorksOfArtGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>3</ContributionCnt>
        <NoncashContributionsRptF990Amt>112177</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>cost or selling price</MethodOfDeterminingRevenuesTxt>
      </WorksOfArtGrp>
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>22</ContributionCnt>
        <NoncashContributionsRptF990Amt>5301097</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>price of stock on gift date</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <FoodInventoryGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>20</ContributionCnt>
        <NoncashContributionsRptF990Amt>17504</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>cost or selling price</MethodOfDeterminingRevenuesTxt>
      </FoodInventoryGrp>
      <DrugsAndMedicalSuppliesGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>1940</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>cost or selling price</MethodOfDeterminingRevenuesTxt>
      </DrugsAndMedicalSuppliesGrp>
      <ScientificSpecimensGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>78</ContributionCnt>
      </ScientificSpecimensGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>Operting Supplies</Desc>
        <ContributionCnt>55</ContributionCnt>
        <NoncashContributionsRptF990Amt>115392</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>cost or selling price</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>charity fundraiser supplies</Desc>
        <ContributionCnt>11</ContributionCnt>
        <NoncashContributionsRptF990Amt>23046</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>cost or selling price</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>charity auction items</Desc>
        <ContributionCnt>60</ContributionCnt>
        <NoncashContributionsRptF990Amt>87645</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>cost or selling price</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>charity raffle items</Desc>
        <ContributionCnt>5</ContributionCnt>
        <NoncashContributionsRptF990Amt>12750</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>cost or selling price</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <Form8283ReceivedCnt>1</Form8283ReceivedCnt>
      <AnyPropertyThatMustBeHeldInd>false</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>true</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>false</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I Line 33</FormAndLineReferenceDesc>
        <ExplanationTxt>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</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I Line 33</FormAndLineReferenceDesc>
        <ExplanationTxt>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.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="990O" softwareId="13000230" softwareVersion="13.6.0.0">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d</FormAndLineReferenceDesc>
        <ExplanationTxt>Program Service Expenses 6,716,000, Grants and allocations 242,091, Revenue 679,040 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, curators, graphic and exhibit designers, photographers and many others contribute to sharing this information with visitors. As well as reaching the 2.1 million visitors, 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.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d</FormAndLineReferenceDesc>
        <ExplanationTxt>Program Service Expenses 3,116,000, Grants and allocations 0, Revenue 5,411,863 Admissions and Parking In the course of a year, over 2.1 million visitors enjoy the experience of seeing and learning about the animals of the world. Each individual that enters Brookfield Zoos gates represents an opportunity a chance to introduce representatives of the wild world, to convey our intertwined connections to the animal kingdom, and to encourage positive change in the world. The Brookfield Zoo is open every day of the year. Admission is free to the general public 52 days each year and at all times to Illinois school groups and to military personnel. On certain days throughout the summer extended hours are offered to be more accessible to a more diverse audience.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d</FormAndLineReferenceDesc>
        <ExplanationTxt>Program Service Expenses 1,374,000, Grants and allocations 0, Revenue 2,095,890 Membership The membership program services our over 115,000 member households, providing them with the opportunity to participate in the conservation and educational efforts of CZS. Member services fulfills new and renewing memberships, answers member questions at locations throughout the park and via telephone and provides educational member Animail updates via email. Members receive unlimited free admission, free or discounted parking and in-park attraction admissions and discounts on food and educational classes.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d</FormAndLineReferenceDesc>
        <ExplanationTxt>Program Service Expenses 3,485,000, Grants and allocations 0, Revenue 1,073,976 Marketing and Public Relations CZSs marketing and public relations draws thousands of visitors throughout the year to discover, celebrate and help conserve natures gifts. Through production of seasonal themed events such as Holiday Magic and Boo at the Zoo, CZS attracts attendance and exposes a wider audience to our mission. Through celebratory events including Party for the Planet, Ape Awareness Month and Bear and Cat Awareness Weekends, CZS inspires conservation leadership. Through outreach programming to local communities and organizations, CZS reaches out to those who may not have an opportunity to visit the zoo otherwise. Additionally, CZS produces two complementary websites CZS.org is devoted to in-depth discussion of conservation issues designed to inspire conservation leadership in our guests brookfieldzoo.org acquaints future and past visitors with the many exhibits within the Zoo, upcoming special events and visit planning tools.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d</FormAndLineReferenceDesc>
        <ExplanationTxt>Program Service Expenses 7,701,000, Grants and allocations 0, Revenue 0 Depreciation Depreciation on the Zoos 246 million in buildings and equipment, including animal exhibits, animal care facilities, education spaces, shops and restaurants.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>The fiscal, general oversight, and policies of the Society are vested in a Board of not more than 58 Trustees. As of December 31, 2013, there were 47 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.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Corwith Hamill, Honorary Chairman of the Board of Trustees through 7/13 and Elizabeth Hamill Bramsen, Vice-Chairman of the Board - Family Relationship Cindy Zeigler, Key Employee and Frank Zeigler, Key Employee - Family Relationship.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>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.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>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 Committee of the Board of Trustees and voted on by the full Board of Trustees.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>The IRS Form 990 is prepared by Societys management and reviewed and signed by the Societys tax advisor. The Form 990 is also reviewed by the Audit Committee of the Board of Trustees. A copy of the entire final version of the form is also made available to the Board of Trustees prior to filing with the IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>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 Sr. VP Finance and Admin. who together determine if a conflict exists. Employee responses are reviewed by the VP Human Resources and the Sr. VP Finance and Admin. 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.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15A and 15B</FormAndLineReferenceDesc>
        <ExplanationTxt>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 Finance and Admin and the Sr. VP of Institutional Advancement in any year where there is an increase in compensation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Governing documents are available through applicable governmental agencies the conflict of interest policy and financial statements are available upon written request to the Society.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Other Changes in net assets or fund balances Changes in Post Retirement Benefits not yet recognized in operations 641,000 change in market value of swap agreements 934,498 rounding and other -415.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>