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By: Becker, Dale M.Type: ArticleIn: Raptor researchVolume: 19Series:Issue: 2-3Date: 1985Page Range: 102--102Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Becker, Dale M. - Sieg, C HType: ArticleIn: Raptor researchVolume: 19Series:Issue: 2-3Date: 1985Page Range: 52--55Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Becker, Dale M. - Sieg, Carolyn Hull.Type: ArticleIn: The Canadian field-naturalistVolume: 101Series:Issue: 3Date: 1997Page Range: 369--372Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Becker, Dale M. - Sieg, Carolyn Hull.Type: ArticleIn: The Canadian field-naturalistVolume: 101Series:Issue: 3Date: 1997Page Range: 398--403Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: