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        <BookValueAmt>2295</BookValueAmt>
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      <TotalBookValueLandBuildingsAmt>2295</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>6671109</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>4407465</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>4407465</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>2263644</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>2263644</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>1731416</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>1731416</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>1731416</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>TO PROVIDE GRANTS FOR RESEARCH AND CONSERVATION IN THE FIELD OF ORNITHOLOGY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>AOS IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE EXCEPT FOR ANY UNRELATED BUSINESS INCOME. AOS HAS ADOPTED THE REQUIREMENTS FOR ACCOUNTING FOR UNCERTAIN TAX POSITIONS AND MANAGEMENT HAS DETERMINED THAT AOS WAS NOT REQUIRED TO RECORD A LIABILITY RELATED TO UNCERTAIN TAX POSITIONS AS OF DECEMBER 31, 2024 OR 2023.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>52784</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA - ARGENTINA, BOLIVIA, BRAZIL, CHILE, COLUMBIA, ECUADOR,</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>25991</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND AND GREENLAND)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>2040</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH ASIA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>873</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SUB-SAHARAN AFRICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>1825</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>83513</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>83513</TotalSpentAmt>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <PurposeOfGrantTxt>RESEARCH GRANTS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED ON THEIR APPLICATION</PurposeOfGrantTxt>
        <CashGrantAmt>2500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <PurposeOfGrantTxt>MEWALDT-KING MEMORIAL RESEARCH GRANTS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</PurposeOfGrantTxt>
        <CashGrantAmt>480</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <PurposeOfGrantTxt>RESEARCH GRANTS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</PurposeOfGrantTxt>
        <CashGrantAmt>2500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <PurposeOfGrantTxt>RESEARCH GRANTS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</PurposeOfGrantTxt>
        <CashGrantAmt>2479</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <PurposeOfGrantTxt>ALEXANDER WETMORE MEMORIAL RESEARCH GRANTS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICTION</PurposeOfGrantTxt>
        <CashGrantAmt>2500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <PurposeOfGrantTxt>KESSEL FELLOWSHIP FOR EARLY CAREER SCIENTISTS PROVIDING TWO YEARS OF SUPPORT FOR THE FULL RANGE OF ORNITHOLOGICAL RESEARCH AS DESCRIBED IN THEIR APPLICATION</PurposeOfGrantTxt>
        <CashGrantAmt>15000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <Total501c3OrgCnt>6</Total501c3OrgCnt>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>RESEARCH GRANTS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>RESEARCH GRANTS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>4</RecipientCnt>
        <CashGrantAmt>15000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>FLORENCE MERRIAM BAILEY AWARD RECOGNIZES AN OUTSTANDING ARTICLE PUBLISHED IN THE PRECEEDING TWO YEARS BY AN EARLY CAREER MEMBER IN AN AOS JOURNAL</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>WILLIAM BREWSTER MEMORIAL AWARD RECOGNIZES THE MOST MERITORIOUS BODY OF WORK ON BIRDS OF THE WESTERN HEMISPHERE PUBLISHED DURING THE PAST TEN YEARS</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>WESLEY LANYON AWARD RECOGNIZES THE EARLY CAREER ORNITHOLOGIST WHO AUTHORS THE BEST INTEGRATIVE PAPER ON AVIAN SCIENCE IN EITHER OF THE TWO AOS JOURNALS</TypeOfAssistanceTxt>
        <RegionTxt>EUROPE (INCLUDING ICELAND AND GREENLAND)</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>ELECTRONIC FUND OR WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>CONSERVATION PRACTITIONER AWARD RECOGNIZES OUTSTANDING WORK IN GOVERNMENT OR NON-GOVERNMENT ORGS TO FURTHER THE CONSERVATION OF BIRDS</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>CAREGIVER GRANTS ENABLE MEMBER ATTENDANCE AT AOS ANNUAL MEETING BY DEFRAYING DEPENDENT CAREGIVING COSTS</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>547</CashGrantAmt>
        <MannerOfCashDisbursementTxt>ELECTRONIC FUND OR WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</TypeOfAssistanceTxt>
        <RegionTxt>EUROPE (INCLUDING ICELAND AND GREENLAND)</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1040</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <RecipientCnt>17</RecipientCnt>
        <CashGrantAmt>14355</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>4370</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH ASIA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>600</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</TypeOfAssistanceTxt>
        <RegionTxt>SUB-SAHARAN AFRICA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1825</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL GRANTS TO SUPPORT MEETING ATTENDANCE BY INDIVIDUALS FROM UNDERREPRESENTED GROUPS OR THOSE WHO ARE FROM, RESIDE OR STUDY IN LATIN AMERICA OR THE CARIBBEAN</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <RecipientCnt>5</RecipientCnt>
        <CashGrantAmt>8970</CashGrantAmt>
        <MannerOfCashDisbursementTxt>ELECTRONIC FUND OR WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL GRANTS TO SUPPORT MEETING ATTENDANCE BY INDIVIDUALS FROM UNDERREPRESENTED GROUPS OR THOSE WHO ARE FROM, RESIDE OR STUDY IN LATIN AMERICA OR THE CARIBBEAN</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>4074</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL GRANTS TO SUPPORT MEETING ATTENDANCE BY INDIVIDUALS FROM UNDERREPRESENTED GROUPS OR THOSE WHO ARE FROM, RESIDE OR STUDY IN LATIN AMERICA OR THE CARIBBEAN</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH ASIA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>273</CashGrantAmt>
        <MannerOfCashDisbursementTxt>ELECTRONIC FUND OR WIRE TRANSFER</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AOS MANAGES ITS GRANT COMPETITIONS THROUGH ITS ASSOCIATION MANAGEMENT SYSTEM. COMMITTEES APPOINTED BY THE PRESIDENT OF THE SOCIETY REVIEW APPLICATIONS AND RECOMMEND GRANTS. AOS MAINTAINS A LIST OF INDIVIDUALS WHO APPLIED FOR EACH GRANT, THE AMOUNT OF EACH GRANT, THE SELECTION CRITERIA USED TO DETERMINE WHO RECEIVED THE GRANT, AND THE LIST OF THE GRANTEES. THE LIST OF GRANTEES ARE POSTED ON THE WEBSITE AMERICANORNITHOLOGY.ORG. GRANTEES PROVIDE ANNUAL INTERIM AND FINAL REPORTS OR SUBMIT AT LEAST ONE MANUSCRIPT TO A PEER-REVIEWED RESEARCH JOURNAL WHICH ACKNOWLEDGES THE AOS RESEARCH GRANT.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>THE UNIVERSITY OF CHICAGO</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5801 S ELLIS AVE</AddressLine1Txt>
          <CityNm>CHICAGO</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60637</ZIPCd>
        </USAddress>
        <RecipientEIN>362177139</RecipientEIN>
        <CashGrantAmt>5000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>RESEARCH GRANTS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF CONNECTICUT</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>343 MANSFIELD RD UNIT 1074</AddressLine1Txt>
          <CityNm>STORRS</CityNm>
          <StateAbbreviationCd>CT</StateAbbreviationCd>
          <ZIPCd>062691074</ZIPCd>
        </USAddress>
        <RecipientEIN>060772160</RecipientEIN>
        <CashGrantAmt>7100</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>RESEARCH GRANTS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>LOUISIANA STATE UNIVERSITY OFFICE OF SPONSORED PROGRAMS</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>202 HIMES HALL</AddressLine1Txt>
          <CityNm>BATON ROUGE</CityNm>
          <StateAbbreviationCd>LA</StateAbbreviationCd>
          <ZIPCd>70803</ZIPCd>
        </USAddress>
        <RecipientEIN>726000848</RecipientEIN>
        <CashGrantAmt>30000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>KESSEL FELLOWSHIP FOR EARLY CAREER SCIENTISTS PROVIDING TWO YEARS OF SUPPORT FOR THE FULL RANGE OF ORNITHOLOGICAL RESEARCH AS DESCRIBED IN THEIR APPLICATION.</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF FLORIDA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 113201 SUITE 1250 EAST</AddressLine1Txt>
          <AddressLine2Txt>CAMPUS OFFICE BLDG</AddressLine2Txt>
          <CityNm>GAINESVILLE</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>32611</ZIPCd>
        </USAddress>
        <RecipientEIN>596002052</RecipientEIN>
        <CashGrantAmt>15000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>KESSEL FELLOWSHIP FOR EARLY CAREER SCIENTISTS PROVIDING TWO YEARS OF SUPPORT FOR THE FULL RANGE OF ORNITHOLOGICAL RESEARCH AS DESCRIBED IN THEIR APPLICATION</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>4</Total501c3OrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>TRAVEL GRANTS TO SUPPORT MEETING ATTENDANCE BY INDIVIDUALS FROM UNDERREPRESENTED GROUPS OR THOSE WHO ARE FROM, RESIDE OR STUDY IN LATIN AMERICA OR THE CARIBBEAN</GrantTypeTxt>
        <RecipientCnt>26</RecipientCnt>
        <CashGrantAmt>37577</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</GrantTypeTxt>
        <RecipientCnt>126</RecipientCnt>
        <CashGrantAmt>69755</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>BAROODY STUDENT PRESENTATION AWARD TO STUDENT AOS MEMBER WITH BEST PRESENTATION IN ANY TOPIC IN ORNITHOLOGY</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>MARK E HAUBER AWARD TO STUDENT AOS MEMBER WITH BEST PRESENTATION ON AVIAN BEHAVIOR</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>AOS STUDENT PRESENTATION AWARDS TO STUDENT AOS MEMBERS BASED ON THE QUALITY OF THEIR RESEARCH PRESENTED AT THE ANNUAL MEETING</GrantTypeTxt>
        <RecipientCnt>7</RecipientCnt>
        <CashGrantAmt>3500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>CAREGIVER GRANTS ENABLE MEMBER ATTENDANCE AT AOS ANNUAL MEETING BY DEFRAYING DEPENDENT CAREGIVING COSTS</GrantTypeTxt>
        <RecipientCnt>5</RecipientCnt>
        <CashGrantAmt>4246</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>WERNER AND HILDEGARD HESSE RESEARCH GRANTS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>4862</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>JOSSELYN VAN TYNE MEMORIAL RESEARCH GRANTS SUPPORT GRADUATE STUDENT AOS MEMBERS IN ALL AREAS OF AVIAN BIOLOGY</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>3667</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>ALEXANDER WETMORE MEMORIAL RESEARCH GRANTS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>4850</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>RESEARCH GRANTS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</GrantTypeTxt>
        <RecipientCnt>4</RecipientCnt>
        <CashGrantAmt>7839</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>KATMA AWARD RECOGNIZES PAPERS PROPOSING IDEAS OR TESTING THEORIES THAT COULD CHANGE THE COURSE OF THINKING ABOUT THE BIOLOGY OF BIRDS</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>BRINA KESSEL AWARDS ARE AWARDED TO AUTHOR OF AN OUTSTANDING PAPER PUBLISHED IN THE JOURNAL ORNITHOLOGY.</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>JENKINSON AND STETTENHEIM SERVICE PROFESSIONAL AWARD HONORING SIGNIFICANT SERVICE TO AOS</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>2000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>JAMES G COOPER EARLY PROFESSIONAL AWARD RECOGNIZES EARLY CAREER RESEARCHERS FOR OUTSTANDING CONTRIBUTIONS TO THE FIELD OF ORNITHOLOGY</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>3000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>WILLIAM BREWSTER MEMORIAL AWARD RECOGNIZES THE MOST MERITORIOUS BODY OF WORK ON BIRDS OF THE WESTERN HEMISPHERE PUBLISHED DURING THE PAST TEN YEARS</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>COUES AWARD TO A SENIOR PROFESSIONAL AWARD HONORING SIGNIFICANT CONTRIBUTION TO ORNITHOLOGY</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SCHREIBER CONSERVATION AWARD HONORS EXTRAORDINARY SCIENTIFIC CONTRIBUTIONS TO THE CONSERVATION, RESTORATION, OR PRESERVATION OF BIRDS AND/OR THEIRHABITATS BY AN INDIVIDUAL OR SMALL TEAM</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>NED K JOHNSON EARLY INVESTIGATOR AWARD RECOGNIZES PROMISING WORK BY A RESEARCHER IN ANY FIELD OF ORNITHOLOGY</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AOS MANAGES ITS GRANT COMPETITIONS THROUGH ITS ASSOCIATION MANAGEMENT SYSTEM. COMMITTEES APPOINTED BY THE PRESIDENT OF THE SOCIETY REVIEW APPLICATIONS AND RECOMMEND GRANTS. AOS MAINTAINS A LIST OF INDIVIDUALS WHO APPLIED FOR EACH GRANT, THE AMOUNT OF EACH GRANT, THE SELECTION CRITERIA USED TO DETERMINE WHO RECEIVED THE GRANT, AND THE LIST OF THE GRANTEES. THE LIST OF GRANTEES ARE POSTED ON THE WEBSITE AMERICANORNITHOLOGY.ORG. GRANTEES PROVIDE ANNUAL INTERIM AND FINAL REPORTS OR SUBMIT AT LEAST ONE MANUSCRIPT TO A PEER-REVIEWED RESEARCH JOURNAL WHICH ACKNOWLEDGES THE AOS RESEARCH GRANT.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JUDITH SCARL</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR AND CEO</TitleTxt>
        <BaseCompensationFilingOrgAmt>160000</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5940</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>4978</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>170918</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <GrntAsstBnftInterestedPrsnGrp>
        <PersonNm>JENNIFER C OWEN</PersonNm>
        <RelationshipWithOrgTxt>DIRECTOR</RelationshipWithOrgTxt>
        <CashGrantAmt>1000</CashGrantAmt>
        <TypeOfAssistanceTxt>AWARD</TypeOfAssistanceTxt>
        <AssistancePurposeTxt>STETTENHEIM SERVICE AWARD</AssistancePurposeTxt>
      </GrntAsstBnftInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <PersonNm>CHRISTINE HANDEL</PersonNm>
        </NameOfInterested>
        <RelationshipDescriptionTxt>FAMILY MEMBER OF COLLEEN HANDEL, PRESIDENT</RelationshipDescriptionTxt>
        <TransactionAmt>79038</TransactionAmt>
        <TransactionDesc>EMPLOYMENT</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AOS HAS MEMBERS WHO PAY ANNUAL DUES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AOS MEMBERS ELECT COUNCILORS AND OFFICERS. THE AOS COUNCIL FUNCTIONS AS THE AOS' BOARD OF DIRECTORS AND SERVES AS THE PRIMARY GOVERNING BODY. COUNCIL MEETS SIX TO SEVEN TIMES A YEAR TO PERFORM THEIR FIDUCIARY DUTIES, ESTABLISH ORGANIZATIONAL STRATEGY, AND ADDRESS GOVERNANCE ISSUES. IN ADDITION, THE AOS HAS FELLOWS, A MEMBERSHIP CATEGORY TO WHICH THE AOS ASSIGNS THE AUTHORITY TO HAVE FINAL APPROVAL FOR CHANGES TO AOS BYLAWS. CURRENT FELLOWS HAVE THE POWER TO ELECT NEW FELLOWS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>COUNCIL DELEGATES SOME DECISION-MAKING AUTHORITY BETWEEN MEETINGS TO AN EXECUTIVE COMMITTEE WHICH CONSISTS OF THE PRESIDENT, PRESIDENT-ELECT, SECRETARY, TREASURER, AND EXECUTIVE DIRECTOR/CEO. FELLOWS, A DESIGNATED MEMBER CLASS, HAVE THE ABILITY TO VOTE TO APPROVE CHANGES TO THE BYLAWS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AOS AUDIT COMMITTEE REVIEWS AND APPROVES THE 990 PRIOR TO SUBMISSION. THE 990 IS DISTRIBUTED TO AOS COUNCIL AND IS ALSO MADE AVAILABLE THROUGH THE SOCIETY WEBSITE, AMERICANORNITHOLOGY.ORG, AS WELL AS UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>AOS OFFICERS, COUNCIL MEMBERS, COMMITTEE CHAIRS AND EMPLOYEES ANNUALLY SUBMIT A CONFLICT OF INTEREST DISCLOSURE STATEMENT AS A REQUIREMENT FOR THEIR SERVICE TO, OR EMPLOYMENT WITH, THE SOCIETY. POTENTIAL CONFLICTS ARE RECORDED AND MONITORED BY THE EXECUTIVE DIRECTOR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE COMPENSATION POLICY AUTHORIZES THE VOTING MEMBERS OF THE EXECUTIVE COMMITTEE OF THE COUNCIL TO CONDUCT THE EXECUTIVE DIRECTOR AND CEO'S ANNUAL APPRAISAL AND TO DETERMINE EXECUTIVE COMPENSATION AND BENEFITS. THE POLICY REQUIRES A COMPENSATION STUDY TO BE PERFORMED PERIODICALLY; A STUDY CONDUCTED IN FY2022 WAS USED TO INFORM COMPENSATION FOR 2024.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS, POLICIES AND FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST AND ON THE WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>