﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2024v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2026-02-12T17:50:28-05:00</ReturnTs>
    <TaxPeriodEndDt>2025-06-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>203746583</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>TAYLOR ROTH AND COMPANY</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1580 LINCOLN ST STE 520</AddressLine1Txt>
        <CityNm>DENVER</CityNm>
        <StateAbbreviationCd>CO</StateAbbreviationCd>
        <ZIPCd>802031517</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2024-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>237063701</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>DENVER AUDUBON</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>DENV</BusinessNameControlTxt>
      <PhoneNum>3039739530</PhoneNum>
      <USAddress>
        <AddressLine1Txt>9308 SOUTH WADSWORTH BLVD</AddressLine1Txt>
        <CityNm>LITTLETON</CityNm>
        <StateAbbreviationCd>CO</StateAbbreviationCd>
        <ZIPCd>80128</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>NICOLE BOPP</PersonNm>
      <PersonTitleTxt>EXECUTIVE DIRECTOR</PersonTitleTxt>
      <PhoneNum>3039739530</PhoneNum>
      <SignatureDt>2026-02-12</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>KEN ROTH</PreparerPersonNm>
      <PTIN>P01389203</PTIN>
      <PhoneNum>3038308109</PhoneNum>
      <PreparationDt>2026-02-12</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="7">
    <IRS990 documentId="RetDoc2" referenceDocumentId="RetDoc6">
      <PrincipalOfficerNm>NICOLE BOPP</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>9308 SOUTH WADSWORTH BLVD</AddressLine1Txt>
        <CityNm>LITTLETON</CityNm>
        <StateAbbreviationCd>CO</StateAbbreviationCd>
        <ZIPCd>80128</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>1299069</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>DENVERAUDUBON.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1969</FormationYr>
      <LegalDomicileStateCd>CO</LegalDomicileStateCd>
      <ActivityOrMissionDesc>INSPIRING ACTIONS THAT PROTECT BIRDS, OTHER WILDLIFE, AND THEIR HABITATS, THROUGH EDUCATION, CONSERVATION AND RESEARCH.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>8</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>8</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>10</TotalEmployeeCnt>
      <TotalVolunteersCnt>200</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <PYContributionsGrantsAmt>328203</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>1033868</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>126157</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>184322</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>52810</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>30052</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>46306</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>29795</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>553476</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>1278037</CYTotalRevenueAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>401522</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>484698</CYSalariesCompEmpBnftPaidAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>22185</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>158609</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>204408</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>560131</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>689106</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>-6655</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>588931</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>1785297</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>2483383</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>22134</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>22142</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>1763163</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>2461241</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>INSPIRING ACTIONS THAT PROTECT BIRDS, OTHER WILDLIFE, AND THEIR HABITATS, THROUGH EDUCATION, CONSERVATION AND RESEARCH.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>558614</ExpenseAmt>
      <RevenueAmt>184322</RevenueAmt>
      <Desc>IN 2024, DENVER AUDUBON EXPANDED ITS IMPACT ACROSS THE METRO REGION THROUGH EDUCATION, CONSERVATION, AND COMMUNITY ENGAGEMENT. WE SERVED 47 SCHOOLS WITH CLASSROOM AND FIELD-BASED PROGRAMS THAT BUILD ECOLOGICAL LITERACY, SCIENTIFIC THINKING, AND CONSERVATION ETHICS. WE STRENGTHENED OUR ENGAGEMENT WORK THROUGH INCREASED FIELD TRIPS, COMMUNITY EVENTS, AND PLACE-BASED PROGRAMS ROOTED IN LOCAL NEIGHBORHOODS. AT THE AUDUBON NATURE CENTER AT CHATFIELD STATE PARK, WE OFFERED PROGRAMS FOR ALL AGES, INCLUDING SCHOOL FIELD TRIPS, FAMILY PROGRAMS, ADULT EDUCATION, AND COMMUNITY NATURALIST TRAINING. OUR BIRD BANDING RESEARCH STATION CONTINUED TO CONNECT THOUSANDS OF PARTICIPANTS WITH HANDS-ON CONSERVATION SCIENCE.</Desc>
      <TotalProgramServiceExpensesAmt>558614</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc7">true</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="RetDoc1">true</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd referenceDocumentId="RetDoc3">false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd referenceDocumentId="RetDoc3">true</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd referenceDocumentId="RetDoc3">false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc4">false</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc4">false</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc4">false</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc4">false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd referenceDocumentId="RetDoc4">true</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc4">true</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc4">false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc4">false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc4">true</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc4">false</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc4">false</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc4">false</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc4">false</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <ForeignActivitiesInd>false</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd referenceDocumentId="RetDoc5">false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd referenceDocumentId="RetDoc5">true</FundraisingActivitiesInd>
      <GamingActivitiesInd referenceDocumentId="RetDoc5">false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd>false</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>false</PYExcessBenefitTransInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>false</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>false</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>false</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>false</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd>false</DisregardedEntityInd>
      <RelatedEntityInd>false</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <IRPDocumentCnt>0</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>true</BackupWthldComplianceInd>
      <EmployeeCnt>10</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>true</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>false</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>false</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>8</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>8</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>false</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>false</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>false</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>true</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>true</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>true</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>true</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>true</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>true</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>true</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>true</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>false</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>NICOLE BOPP</PersonNm>
        <PhoneNum>3039739530</PhoneNum>
        <USAddress>
          <AddressLine1Txt>9308 S WADSWORTH BLVD</AddressLine1Txt>
          <CityNm>LITTLETON</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
          <ZIPCd>80128</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>NICOLE BOPP</PersonNm>
        <TitleTxt>EXECUTIVE DI</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>66815</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CURT FRANKENFELD</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DON HALL</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ELVIRA KOZHEVNIKOVA</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DINA BAKER</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DALE CAMPAU</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SHELLEY CONGER</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PILAR HOYOS</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DIANE RAPUE</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>66815</TotalReportableCompFromOrgAmt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>false</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <FundraisingAmt>12914</FundraisingAmt>
      <GovernmentGrantsAmt>10800</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>1010154</AllOtherContributionsAmt>
      <TotalContributionsAmt>1033868</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>PROGRAMS AND PROJECTS</Desc>
        <TotalRevenueColumnAmt>184322</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>184322</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>184322</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>22924</TotalRevenueColumnAmt>
        <ExclusionAmt>22924</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <OtherAmt>7128</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <GainOrLossGrp>
        <OtherAmt>7128</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>7128</TotalRevenueColumnAmt>
        <ExclusionAmt>7128</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <FundraisingGrossIncomeAmt>49138</FundraisingGrossIncomeAmt>
      <ContriRptFundraisingEventAmt>12914</ContriRptFundraisingEventAmt>
      <FundraisingDirectExpensesAmt>21032</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>28106</TotalRevenueColumnAmt>
        <ExclusionAmt>28106</ExclusionAmt>
      </NetIncmFromFundraisingEvtGrp>
      <OtherRevenueMiscGrp>
        <Desc>MISCELLANEOUS</Desc>
        <TotalRevenueColumnAmt>1689</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1689</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>1689</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>1278037</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>186011</RelatedOrExemptFuncIncomeAmt>
        <ExclusionAmt>58158</ExclusionAmt>
      </TotalRevenueGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>89333</TotalAmt>
        <ProgramServicesAmt>74102</ProgramServicesAmt>
        <ManagementAndGeneralAmt>13400</ManagementAndGeneralAmt>
        <FundraisingAmt>1831</FundraisingAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>307929</TotalAmt>
        <ProgramServicesAmt>255427</ProgramServicesAmt>
        <ManagementAndGeneralAmt>46189</ManagementAndGeneralAmt>
        <FundraisingAmt>6313</FundraisingAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>5102</TotalAmt>
        <ProgramServicesAmt>4232</ProgramServicesAmt>
        <ManagementAndGeneralAmt>765</ManagementAndGeneralAmt>
        <FundraisingAmt>105</FundraisingAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>1921</TotalAmt>
        <ProgramServicesAmt>1594</ProgramServicesAmt>
        <ManagementAndGeneralAmt>288</ManagementAndGeneralAmt>
        <FundraisingAmt>39</FundraisingAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>80413</TotalAmt>
        <ProgramServicesAmt>66703</ProgramServicesAmt>
        <ManagementAndGeneralAmt>12062</ManagementAndGeneralAmt>
        <FundraisingAmt>1648</FundraisingAmt>
      </PayrollTaxesGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>15500</TotalAmt>
        <ManagementAndGeneralAmt>15500</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>26226</TotalAmt>
        <ProgramServicesAmt>26226</ProgramServicesAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>10445</TotalAmt>
        <ProgramServicesAmt>5222</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5223</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>9965</TotalAmt>
        <ProgramServicesAmt>9965</ProgramServicesAmt>
      </FeesForServicesOtherGrp>
      <OfficeExpensesGrp>
        <TotalAmt>36282</TotalAmt>
        <ProgramServicesAmt>27634</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3509</ManagementAndGeneralAmt>
        <FundraisingAmt>5139</FundraisingAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>10684</TotalAmt>
        <ProgramServicesAmt>8548</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1068</ManagementAndGeneralAmt>
        <FundraisingAmt>1068</FundraisingAmt>
      </InformationTechnologyGrp>
      <OccupancyGrp>
        <TotalAmt>14615</TotalAmt>
        <ProgramServicesAmt>12123</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2192</ManagementAndGeneralAmt>
        <FundraisingAmt>300</FundraisingAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>2701</TotalAmt>
        <ProgramServicesAmt>2701</ProgramServicesAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>731</TotalAmt>
        <ProgramServicesAmt>731</ProgramServicesAmt>
      </ConferencesMeetingsGrp>
      <InsuranceGrp>
        <TotalAmt>8111</TotalAmt>
        <ManagementAndGeneralAmt>8111</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>DIRECT PROGRAM COSTS</Desc>
        <TotalAmt>46316</TotalAmt>
        <ProgramServicesAmt>46316</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>EDUCATION/PROF DEVELOP</Desc>
        <TotalAmt>9370</TotalAmt>
        <ProgramServicesAmt>9370</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>MISCELLANOUS EXPENSE</Desc>
        <TotalAmt>6526</TotalAmt>
        <ProgramServicesAmt>6526</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>INDIRECT FUNDRAISING</Desc>
        <TotalAmt>5742</TotalAmt>
        <FundraisingAmt>5742</FundraisingAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>1194</TotalAmt>
        <ProgramServicesAmt>1194</ProgramServicesAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>689106</TotalAmt>
        <ProgramServicesAmt>558614</ProgramServicesAmt>
        <ManagementAndGeneralAmt>108307</ManagementAndGeneralAmt>
        <FundraisingAmt>22185</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>522588</BOYAmt>
        <EOYAmt>1255644</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>2125</BOYAmt>
        <EOYAmt>8951</EOYAmt>
      </AccountsReceivableGrp>
      <LandBldgEquipCostOrOtherBssAmt>683317</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>482223</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>113521</BOYAmt>
        <EOYAmt>201094</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>164461</BOYAmt>
      </InvestmentsPubTradedSecGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>982602</BOYAmt>
        <EOYAmt>1017694</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>1785297</BOYAmt>
        <EOYAmt>2483383</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>22134</BOYAmt>
        <EOYAmt>22142</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>22134</BOYAmt>
        <EOYAmt>22142</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>1543353</BOYAmt>
        <EOYAmt>2237989</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>219810</BOYAmt>
        <EOYAmt>223252</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>1763163</BOYAmt>
        <EOYAmt>2461241</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>1785297</BOYAmt>
        <EOYAmt>2483383</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>588931</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>109147</NetUnrlzdGainsLossesInvstAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>false</FSAuditedInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc7">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>469911</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>774203</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>324302</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>328203</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1033868</CurrentTaxYearAmt>
        <TotalAmt>2930487</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>469911</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>774203</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>324302</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>328203</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1033868</CurrentTaxYearAmt>
        <TotalAmt>2930487</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>1043974</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>1886513</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>65915</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>52425</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>31674</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>29388</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>22924</CurrentTaxYearAmt>
        <TotalAmt>202326</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>3132813</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>186011</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.60220</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.73550</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleC documentId="RetDoc3">
      <TotalDirectLobbyingGrp>
        <FilingOrganizationsTotalAmt>26226</FilingOrganizationsTotalAmt>
      </TotalDirectLobbyingGrp>
      <TotalLobbyingExpendGrp>
        <FilingOrganizationsTotalAmt>26226</FilingOrganizationsTotalAmt>
      </TotalLobbyingExpendGrp>
      <OtherExemptPurposeExpendGrp>
        <FilingOrganizationsTotalAmt>662880</FilingOrganizationsTotalAmt>
      </OtherExemptPurposeExpendGrp>
      <TotalExemptPurposeExpendGrp>
        <FilingOrganizationsTotalAmt>689106</FilingOrganizationsTotalAmt>
      </TotalExemptPurposeExpendGrp>
      <LobbyingNontaxableAmountGrp>
        <FilingOrganizationsTotalAmt>128366</FilingOrganizationsTotalAmt>
      </LobbyingNontaxableAmountGrp>
      <GrassrootsNontaxableGrp>
        <FilingOrganizationsTotalAmt>32092</FilingOrganizationsTotalAmt>
      </GrassrootsNontaxableGrp>
      <AvgLobbyingNontaxableAmountGrp>
        <CurrentYearMinus3Amt>97023</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>97023</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>109020</CurrentYearMinus1Amt>
        <CurrentYearAmt>128366</CurrentYearAmt>
        <TotalAmt>431432</TotalAmt>
      </AvgLobbyingNontaxableAmountGrp>
      <LobbyingCeilingAmt>647148</LobbyingCeilingAmt>
      <AvgTotalLobbyingExpendGrp>
        <CurrentYearMinus3Amt>9651</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>9651</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>10506</CurrentYearMinus1Amt>
        <CurrentYearAmt>26226</CurrentYearAmt>
        <TotalAmt>56034</TotalAmt>
      </AvgTotalLobbyingExpendGrp>
      <AvgGrassrootsNontaxableGrp>
        <CurrentYearMinus3Amt>24256</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>24256</CurrentYearMinus2Amt>
        <CurrentYearAmt>32092</CurrentYearAmt>
        <TotalAmt>80604</TotalAmt>
      </AvgGrassrootsNontaxableGrp>
      <GrassrootsCeilingAmt>120906</GrassrootsCeilingAmt>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc4">
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>982602</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>112081</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>-69151</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>-7838</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>1017694</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>944922</BeginningYearBalanceAmt>
        <ContributionsAmt>9113</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>40670</InvestmentEarningsOrLossesAmt>
        <AdministrativeExpensesAmt>-12103</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>982602</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>903482</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>41440</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>944922</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>634414</BeginningYearBalanceAmt>
        <ContributionsAmt>440300</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-150908</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>-12171</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>-8153</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>903482</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>400754</BeginningYearBalanceAmt>
        <ContributionsAmt>233660</ContributionsAmt>
        <EndYearBalanceAmt>634414</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>1.00000</BoardDesignatedBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>true</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>false</EndowmentsHeldRelatedOrgInd>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>644706</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>446822</DepreciationAmt>
        <BookValueAmt>197884</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>38611</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>35401</DepreciationAmt>
        <BookValueAmt>3210</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>201094</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>ASSETS HELD BY OTHERS</Desc>
        <BookValueAmt>1017694</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>1017694</TotalBookValueOtherAssetsAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 2, PART V, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD-DESIGNATED ENDOWMENT FUND EXISTS TO SUPPORT DENVER AUDUBON'S OPERATING NEEDS. NO DISBURSEMENTS COULD HAPPEN UNTIL THE FUND REACHED A VALUE OF 200,000, WHICH HAPPENED IN 2017. THE FUND IS HELD AT THE COLORADO GIVES FOUNDATION. THE DISTRIBUTION POLICY IS BASED ON 5% OF THE AVERAGE FUND VALUE FOR THE PRECEDING THREE YEARS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc5">
      <FundraisingEventInformationGrp>
        <Event1Nm>SPRING EVENT</Event1Nm>
        <GrossReceiptsEvent1Amt>49138</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>49138</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>21032</OtherDirectExpensesEvent1Amt>
        <Event2Nm>BIRDATHON</Event2Nm>
        <GrossReceiptsEvent2Amt>9819</GrossReceiptsEvent2Amt>
        <CharitableContriEvent2Amt>9819</CharitableContriEvent2Amt>
        <GrossReceiptsTotalAmt>58957</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>9819</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>49138</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>21032</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>21032</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>28106</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="RetDoc6">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE 990 IS REVIEWED BY THE EXECUTIVE COMMITTEE OF THE BOARD OF DIRECTORS PRIOR TO FILING ELECTRONICALLY WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>EACH BOARD MEMBER REVIEWES AND ACKNOWLEDGES THE CONFLICT OF INTEREST POLICY ANNUALLY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION OF THE EXECUTIVE DIRECTOR IS REVIEWED ANNUALLY BY THE BOARD OF DIRECTORS AND ADJUSTMENTS ARE BASED ON A COMBINATION OF MERIT, BUDGET CONSTRAINTS, AND COMPARISON TO NON-PROFITS OF SIMILAR SIZE AND COMPLEXITY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING AND FINANCIAL DOCUMENTS ARE AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>