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        <PersonNm>STEVEN R BEISSINGER</PersonNm>
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        <PersonNm>MICHAEL S WEBSTER</PersonNm>
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        <PersonNm>SARA KAISER</PersonNm>
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        <PersonNm>ERICA NOL</PersonNm>
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      <TenPctFactsCrcmstncsTestCYInd>X</TenPctFactsCrcmstncsTestCYInd>
      <FactsAndCircumstancesTestTxt>THE AMERICAN ORNITHOLOGICAL SOCIETY (AOS) RECEIVES A SUBSTANTIAL AMOUNT OF SUPPORT FROM A COMBINATION OF GOVERNMENT AGENCIES AND CONTRIBUTIONS FROM THE GENERAL PUBLIC, VIA BOTH DIRECT AND INDIRECT CONTRIBUTIONS. IN 2022, THE AOS RECEIVED 31.74% OF ITS SUPPORT FROM GOVERNMENT AND PUBLIC SOURCES. THE AOS IS ORGANIZED AND OPERATED TO ATTRACT NEW AND ADDITIONAL PUBLIC AND GOVERNMENTAL SUPPORT ON A CONTINUOUS BASIS. THE FACTS AND CIRCUMSTANCES THAT AOS IS PUBLICLY FUNDED ARE BASED ON AOS FUNDING, POLICIES, PUBLICATIONS, PROGRAMS, AND MEMBERSHIP. ORGANIZED IN 1883, AND INCORPORATED IN 1888, THE AOS' INVESTMENT HOLDINGS ORIGINATE FROM CONTRIBUTIONS FROM MULTIPLE AND VARIED MEMBERS OF THE GENERAL PUBLIC, INCLUDING THOUSANDS OF INDIVIDUAL DONORS WITH AN INTEREST IN ORNITHOLOGY, AND LIFE MEMBERSHIP DUES FROM OUR 510 LIFE MEMBERS. THESE ENDOWMENT HOLDINGS CONTRIBUTE SUBSTANTIAL FUNDING EACH YEAR TO SUPPORT AOS' OPERATIONS AND PROGRAM DELIVERY THAT APPEAL TO BROAD AUDIENCES OF INDIVIDUALS AND INTERESTS. THE AOS IS A MEMBER ORGANIZATION WITH CONSISTENT MEMBER NUMBERS BETWEEN 2500 AND 3000 MEMBERS ANNUALLY, AND A ROBUST MEMBERSHIP OF 2820 IN 2022. WE ATTRACT NEW MEMBERS EACH YEAR, WITH 435 NEW MEMBERS IN 2022, 15.4% PERCENT OF OUR TOTAL 2022 MEMBERSHIP. OUR ROBUST PROGRAMS TO SUPPORT STUDENT MEMBERSHIPS ENSURE THAT WE ATTRACT NEW MEMBERS AS INDIVIDUALS BEGIN CAREERS IN THE ORNITHOLOGICAL FIELD. IN ADDITION, AOS'S ANNUAL SCIENTIFIC CONFERENCES, WHICH ATTRACT ~800 INDIVIDUALS FROM AROUND THE WORLD, ALSO ATTRACT INCREASING AMOUNTS OF PUBLIC SUPPORT AND SPONSORSHIP. IN 2022, OUR ANNUAL MEETING ATTRACTED $137,700 OF SPONSORSHIP DOLLARS FROM FEDERAL AND LOCAL GOVERNMENTS AND OTHER NON-PROFIT ORGANIZATIONS, COMPARED TO $33,250 IN 2021. IN 2022 AND 2023, THE AOS FOCUSED ON MULTIPLE PLANNING EFFORTS, THE IMPLEMENTATION OF WHICH WILL CONTINUE TO ATTRACT PUBLIC SUPPORT. IN 2021 AND 2022, THE AOS DEVELOPED A DIVERSITY, EQUITY, INCLUSION, BELONGING AND JUSTICE (DEIBJ) ACTION PLAN THAT IS NOW REFLECTED IN OUR NEW 2023 STRATEGIC PLAN. OUR DEIBJ PLAN WILL HELP TO PROVIDE A MORE INCLUSIVE AND WELCOMING COMMUNITY THAT SUPPORTS SCIENTISTS OF ALL BACKGROUNDS AND IDENTITIES. IN ADDITION TO ATTRACTING NEW MEMBERS AND INDIVIDUAL DONORS, THESE EFFORTS ALLOW US TO ATTRACT ADDITIONAL SOURCES OF GOVERNMENT SUPPORT; THE AOS WAS THE RECIPIENT OF TWO SIGNIFICANT FEDERAL SUBAWARDS IN 2022 AND 2023 AIMED AT EXPANDING SCIENTIFIC ACCESS THROUGH SUPPORT OF DIVERSE PEOPLE GROUPS. A NEW STRATEGIC INITIATIVE LAUNCHED IN LATE 2023, TO CHANGE ENGLISH COMMON NAMES OF BIRDS NAMED AFTER PEOPLE, WILL ATTRACT SIGNIFICANT SUPPORT IN 2024 AND FOR SEVERAL YEARS AFTER THAT, FROM A MORE DIVERSE SEGMENT OF THE PUBLIC. AOS GOVERNING BODY (COUNCIL) IS ELECTED BY OUR BROAD AND DIVERSE MEMBERSHIP, ACCORDING TO THE AOS'S BYLAWS. COUNCILORS ARE GENERALLY INDIVIDUALS WHO ARE EMPLOYED BY ACADEMIC INSTITUTIONS, NON-PROFIT ORGANIZATIONS, OR GOVERNMENT AGENCIES, AND THEY HAVE SPECIALIZED KNOWLEDGE AND EXPERTISE WITHIN THE FIELD OF ORNITHOLOGY. THE GOVERNING BODY REPRESENTS THE BROAD INTEREST OF OUR BROAD AND DIVERSE MEMBERSHIP. THE AOS PROVIDES SERVICES WIDELY USED BY COLLEGES, UNIVERSITIES, GOVERNMENT EMPLOYEES, AND MEMBERS OF THE GENERAL PUBLIC OR INVITES PUBLIC PARTICIPATION IN PROGRAMS AND POLICIES. THE AOS PUBLISHES TWO SCHOLARLY JOURNALS, ORNITHOLOGY AND ORNITHOLOGICAL APPLICATIONS. THESE PUBLICATIONS, RESPECTIVELY, PUBLISH ORIGINAL RESEARCH THAT TEST FUNDAMENTAL, SCIENTIFIC HYPOTHESES THROUGH ORNITHOLOGICAL STUDIES AND ADVANCE THE UNDERSTANDING OF LIVING OR EXTINCT BIRD SPECIES AND PUBLISH ORIGINAL RESEARCH, SYNTHESES, AND ASSESSMENTS FROM ALL PARTS OF THE GLOBE FOCUSING ON THE APPLICATION OF THE SCIENTIFIC THEORY, ORNITHOLOGICAL KNOWLEDGE AND METHODS TO THE CONSERVATION AND MANAGEMENT OF BIRDS, AND TO POLICY. UNIVERSITIES AND INSTITUTIONS ARE MAJOR SUBSCRIBERS OF THE JOURNALS. AFTER ONE YEAR, ALL ARTICLES ARE FREELY AVAILABLE TO THE PUBLIC. THE AOS FURTHER ENGAGES THE PUBLIC THROUGH OUR PRODUCTION OF THE CHECKLIST OF NORTH AND MIDDLE AMERICAN BIRDS, WHICH PROVIDES THE TAXONOMIC AND NOMENCLATURAL FOUNDATION FOR BIRD RESEARCH, CONSERVATION, AND EDUCATION IN NORTH AND MIDDLE AMERICA, AND THE CHECKLIST OF SOUTH AMERICAN BIRDS, WHICH SERVES A SIMILAR PURPOSE IN SOUTH AMERICA. CHECKLISTS PROVIDE THE SCIENTIFIC TAXONOMIC NAMES OF SPECIES AS WELL AS THEIR COMMON NAMES. THESE NAMES ARE USED BY MILLIONS OF PEOPLE GLOBALLY, FROM PROFESSIONAL ORNITHOLOGISTS, TO CASUAL BIRDWATCHERS, TO LAND MANAGERS, TO BOOK AUTHORS. THE AOS COUNCIL ANNOUNCED A COMMITMENT IN NOVEMBER 2023 TO CHANGE ALL ENGLISH LANGUAGE NAMES OF BIRDS WITHIN ITS GEOGRAPHIC JURISDICTION THAT ARE NAMED DIRECTLY AFTER PEOPLE, AND TO ENGAGE THE PUBLIC IN COMING UP WITH NEW, DESCRIPTIVE NAMES FOR THESE SPECIES. THIS INITIATIVE, WHICH WILL LAUNCH IN 2024, WILL ENSURE EVEN MORE BROAD AND CREATIVE PUBLIC ENGAGEMENT WITH THE AOS AND ITS PROGRAMS IN THE FUTURE. THE AOS IS THE LARGEST PROFESSIONAL ORNITHOLOGICAL SOCIETY IN THE WESTERN HEMISPHERE AND ATTRACTS A SIGNIFICANT PERCENTAGE OF US-BASED ORNITHOLOGISTS, AS WELL AS ORNITHOLOGISTS FROM ACROSS THE GLOBE. AS A MEMBER ORGANIZATION, THE AOS SEEKS TO ENROLL A SUBSTANTIAL NUMBER OF INDIVIDUALS THROUGHOUT THE ORNITHOLOGICAL COMMUNITY. OUR MEMBERSHIP RATES ARE DESIGNED TO MAKE MEMBERSHIP ACCESSIBLE TO A BROAD RANGE OF SCIENTISTS ACROSS CAREER STAGES, INSTITUTIONS, AND GEOGRAPHIES. THE AOS' GOVERNING BODY AND MEMBERSHIP COMMITTEE REGULARLY EVALUATE MEMBER BENEFITS, BARRIERS TO MEMBERSHIP AND MAKE RECOMMENDATIONS AND SUGGESTIONS FOR WAYS TO IMPROVEMENTS, WHEN DEEMED NECESSARY.</FactsAndCircumstancesTestTxt>
    </IRS990ScheduleA>
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        <ContributorNum>RESTRICTED</ContributorNum>
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          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
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          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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        <ContributionsAmt>102808</ContributionsAmt>
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        <OtherExpendituresAmt>-801177</OtherExpendituresAmt>
        <EndYearBalanceAmt>23726664</EndYearBalanceAmt>
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      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>26345850</BeginningYearBalanceAmt>
        <ContributionsAmt>162490</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>4669570</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>676132</OtherExpendituresAmt>
        <EndYearBalanceAmt>30501778</EndYearBalanceAmt>
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        <BeginningYearBalanceAmt>22261870</BeginningYearBalanceAmt>
        <ContributionsAmt>7753</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>4524844</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>448617</OtherExpendituresAmt>
        <EndYearBalanceAmt>26345850</EndYearBalanceAmt>
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        <BeginningYearBalanceAmt>18319191</BeginningYearBalanceAmt>
        <ContributionsAmt>39366</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>4493928</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>590615</OtherExpendituresAmt>
        <EndYearBalanceAmt>22261870</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
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        <BeginningYearBalanceAmt>18858835</BeginningYearBalanceAmt>
        <ContributionsAmt>832277</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-896359</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>475562</OtherExpendituresAmt>
        <EndYearBalanceAmt>18319191</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.45807</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.02075</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.52118</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>4478</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>4478</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>41066</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>35017</DepreciationAmt>
        <BookValueAmt>6049</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>6049</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>-5255684</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>-6603135</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>-6603135</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>1347451</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>1347451</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>1560069</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesNotReportedAmt>0</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>1560069</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>1560069</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>TO PROVIDE GRANTS FOR RESEARCH AND EDUCATION 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, 2022.</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>8434</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA - ARGENTINA, BOLIVIA, BRAZIL, CHILE, COLUMBIA, ECUADOR,</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>5820</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND AND GREENLAND)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>2660</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>3000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EAST ASIA AND THE PACIFIC</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>1650</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH ASIA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTMAKING</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>15500</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>37064</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>37064</TotalSpentAmt>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>SOUTH ASIA</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>1</Total501c3OrgCnt>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</TypeOfAssistanceTxt>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>3000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>MARGARET MORSE NICE AWARDS SUPPORT THE GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF RESEARCH AS DESCRIBED IN THEIR APPLICATION.</TypeOfAssistanceTxt>
        <RegionTxt>EAST ASIA AND THE PACIFIC</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1650</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>RESEARCH AWARDS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</TypeOfAssistanceTxt>
        <RegionTxt>EUROPE (INCLUDING ICELAND AND GREENLAND)</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1718</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>WERNER AND HILDEGARD HESSE RESEARCH AWARDS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</TypeOfAssistanceTxt>
        <RegionTxt>EUROPE (INCLUDING ICELAND AND GREENLAND)</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>941</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>7</RecipientCnt>
        <CashGrantAmt>4640</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>CAREGIVER GRANTS WHICH ENABLE MEMBER ATTENDANCE AT AOS ANNUAL MEETING BY DEFRAYING DEPENDENT CAREGIVING COSTS</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1125</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>WILLIAM BREWSTER MEMORIAL AWARD WHICH RECOGNIZES THE MOST MERITORIOUS BODY OF WORK ON THE BIRDS OF THE WESTERN HEMISPHERE PUBLISHED DURING THE PAST 10 YEARS.</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>RESEARCH AWARDS SUPPORTING THE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THEIR RESEARCH AS DESCRIBED IN THEIR APPLICATION.</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1670</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>4</RecipientCnt>
        <CashGrantAmt>3320</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>RESEARCH AWARDS SUPPORTING THE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THEIR RESEARCH AS DESCRIBED IN THEIR APPLICATION.</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2500</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>500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</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 AWARD COMPETITIONS THROUGH ITS ASSOCIATION MANAGEMENT SYSTEM. COMMITTEES APPOINTED BY THE PRESIDENT OF THE SOCIETY REVIEW APPLICATIONS AND RECOMMEND AWARDS. AOS MAINTAINS A LIST OF INDIVIDUALS WHO APPLIED FOR EACH AWARD, THE AMOUNT OF EACH AWARD, THE SELECTION CRITERIA USED TO DETERMINE WHO RECEIVED THE AWARD, AND THE LIST OF THE GRANTEES. THE LIST OF GRANTEES ARE POSTED ON THE WEBSITE AMERICANORNITHOLOGY.ORG.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III ACCOUNTING METHOD:</FormAndLineReferenceDesc>
      </SupplementalInformationDetail>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <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>7500</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>PRIORITY PROJECT RESEARCH AWARD SUPPORTING EMERGING SCIENCE.</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>SMITHSONIAN INSTITUTION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1000 JEFFERSON DR SW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20560</ZIPCd>
        </USAddress>
        <RecipientEIN>530206027</RecipientEIN>
        <CashGrantAmt>15000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>KESSEL FELLOWSHIP FOR EARLY CAREER SCIENTISTS PROVIDE UP TO TWO YEARS OF SUPPORT FOR THE FULL RANGE OF ORNITHOLOGICAL RESEARCH AS DESCRIBED IN THEIR APPLICATION.</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>2</Total501c3OrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>ALEXANDER WETMORE MEMORIAL RESEARCH AWARDS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICTION</GrantTypeTxt>
        <RecipientCnt>5</RecipientCnt>
        <CashGrantAmt>11649</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>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>COUES AWARD TO A SENIOR PROFESSIONAL AWARD HONORING SIGNIFICANT CONTRIBUTION TO ORNITHOLOGY</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>2000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>FLORENCE MERRIAM BAILEY AWARD RECOGNIZES AN OUTSTANDING ARTICLE PUBLISHED IN THE PRECEEDING TWO YEARS BY AN EARLY CAREER MEMBER IN AN AOS JOURNAL</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>JAMES G COOPER EARLY PROFESSIONAL AWARD RECOGNIZES EARLY CAREER RESERCHERS FOR OUTSTANDING CONTRIBUTIONS TO THE FIELD OF ORNITHOLOGY</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>JENKINSON AND STETTENHEIM SERVICE PROFESSIONAL AWARD HONORING SIGNIFICANT SERVICE TO AOS</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>JOSSELYN VAN TYNE MEMORIAL RESEARCH AWARDS SUPPORT GRADUATE STUDENT AOS MEMBERS IN ALL AREA OF AVIAN BIOLOGY</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2445</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>NED K JOHNSON EARLY INVESTIGATOR AWARD RECOGNIZES PROMISING WORK BY A RESEARCH IN ANY FIELD OF ORNITHOLOGY</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>3000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SCHREIBER CONSERVATION AWARD HONOR EXTRAORDINARY SCIENTIFIC CONTRIBUTIONS TO THE CONSERVATION, RESTORATION, OR PRESERVATION OF BIRDS AND/OR THEIR HABITATS BY AN INDIVIDUAL OR SMALL TEAM</GrantTypeTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>2000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>MARGARET MORSE NICE AWARDS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1350</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>MEWALDTKING MEMORIAL RESEARCH AWARDS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1300</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>GRINNELL MEMORIAL RESEARCH AWARDS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>RESEARCH AWARDS SUPPORTING STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</GrantTypeTxt>
        <RecipientCnt>15</RecipientCnt>
        <CashGrantAmt>38033</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>BRINA KESSEL AWARD TO THE PRIMARY AUTHOR OF AN OUTSTANDING PAPER PUBLISHED IN ORNITHOLOGY</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>LOYE AND ALDEN MILLER AWARD TO A SENIOR PROFESSONAL</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</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>WERNER AND HILDEGARD HESSE RESEARCH AWARDS SUPPORT GRADUATE STUDENT AOS MEMBERS BASED ON THE QUALITY OF THE RESEARCH AS DESCRIBED IN THEIR APPLICATION</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2420</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>WESLEY LANYON AWARD RECOGNIZES THE EARLY CAREER ORNITHOLOGIST WHO AUTHORS THE BEST INTEGRATIVE PAPER ON AVIAN SCIENCE IN EITHER OF THE TWO AOS JOURNALS</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>CAREGIVER GRANTS ENABLE MEMBER ATTENDANCE AT AOS ANNUAL MEETING BY DEFRAYING DEPENDENT CAREGIVING COSTS</GrantTypeTxt>
        <RecipientCnt>9</RecipientCnt>
        <CashGrantAmt>8186</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>STUDENT TRAVEL GRANTS SUPPORT ANNUAL MEETING ATTENDANCE FOR STUDENT MEMBERS</GrantTypeTxt>
        <RecipientCnt>81</RecipientCnt>
        <CashGrantAmt>55195</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <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>66</RecipientCnt>
        <CashGrantAmt>58607</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AOS MANAGES ITS AWARD COMPETITIONS THROUGH ITS ASSOCIATION MANAGEMENT SYSTEM. COMMITTEES APPOINTED BY THE PRESIDENT OF THE SOCIETY REVIEW APPLICATIONS AND RECOMMEND AWARDS. AOS MAINTAINS A LIST OF INDIVIDUALS WHO APPLIED FOR EACH AWARD, THE AMOUNT OF EACH AWARD, THE SELECTION CRITERIA USED TO DETERMINE WHO RECEIVED THE AWARD, AND THE LIST OF THE GRANTEES. THE LIST OF GRANTEES ARE POSTED ON THE WEBSITE AMERICANORNITHOLOGY.ORG.</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</TitleTxt>
        <BaseCompensationFilingOrgAmt>143500</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>2000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>5700</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>4536</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>155736</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <PersonNm>CHRISTINE SCHMIDT</PersonNm>
        </NameOfInterested>
        <RelationshipDescriptionTxt>FAMILY MEMBER OF COLLEEN HANDEL, PRESIDENT</RelationshipDescriptionTxt>
        <TransactionAmt>72500</TransactionAmt>
        <TransactionDesc>EMPLOYMENT</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S BYLAWS WERE AMENDED DURING THE YEAR TO INCLUDE THE FOLLOWING LANGUAGE: ONE ELECTIVE STUDENT COUNCILOR SHALL BE ELECTED ANNUALLY. ELECTIVE STUDENT COUNCILORS SHALL SERVE FOR TERMS OF APPROXIMATELY TWO YEARS, BEGINNING AT THE CLOSE OF THE NEXT STATED MEETING FOLLOWING THEIR ELECTION AND ENDING AT THE CLOSE OF THE SECOND STATED MEETING THEREAFTER. IF ONE OR MORE VACANCIES ARISE, A CORRESPONDING NUMBER OF ELECTIVE STUDENT COUNCILORS SHALL BE ELECTED DURING THE NEXT ELECTION TO FILL THE UNEXPIRED TERM(S). TRANSITION PROVISION. DURING THE FIRST ELECTION FOLLOWING THE 140TH STATED MEETING, A SECOND ELECTIVE STUDENT COUNCILOR SHALL ALSO BE ELECTED. THE TERM FOR THIS POSITION SHALL BE FOR APPROXIMATELY ONE YEAR, BEGINNING AT THE CLOSE OF THE 141ST STATED MEETING IN 2023 AND CONTINUING TO THE CLOSE OF THE 142ND STATED MEETING IN 2024. THIS TRANSITION PROVISION SHALL BE AUTOMATICALLY REMOVED FROM THE BYLAWS AFTER THE 142ND STATED MEETING IN 2024.</ExplanationTxt>
      </SupplementalInformationDetail>
      <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 A COUNCIL AND OFFICERS; COUNCIL MEETS SIX TO SEVEN TIMES A YEAR TO ADDRESS GOVERNANCE ISSUES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>FELLOWS, A DESIGNATED MEMBER CLASS, HAVE THE ABILITY TO VOTE AND TO APPROVE CHANGES.</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, 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 IN CONSULTATION WITH THE SECRETARY OF THE SOCIETY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE COMPENSATION POLICY AUTHORIZES THE EXECUTIVE COMMITTEE OF THE COUNCIL TO CONDUCT THE EXECUTIVE DIRECTOR'S ANNUAL APPRAISAL, AND TO RECOMMEND TO COUNCIL EXECUTIVE COMPENSATION AND BENEFITS. THE POLICY REQUIRES A COMPENSATION STUDY TO BE PERFORMED PERIODICALLY; A STUDY CONDUCTED IN FY2020 WAS USED TO INFORM COMPENSATION FOR 2022.</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>
