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By: Doyle, F IType: ArticleIn: The Canadian field-naturalistVolume: 109Series:Issue: 1Date: 1995Page Range: 115--116Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Doyle, F IType: ArticleIn: The journal of raptor researchVolume: 30Series:Issue: 1Date: 1996Page Range: 38--40Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Mahon, T - Doyle, F IType: ArticleIn: The journal of raptor researchVolume: 39Series:Issue: 3Date: 2005Page Range: 335--341Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Rohner, C - Doyle, F IType: ArticleIn: The journal of raptor researchVolume: 26Series:Issue: 4Date: 1992Page Range: 261--263Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Rohner, C - Doyle, F IType: ArticleIn: The journal of raptor researchVolume: 26Series:Issue: 1Date: 1992Page Range: 33--35Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: