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By: James, Paul CType: ArticleIn: The Canadian field-naturalistVolume: 95Series:Issue: 4Date: 1981Page Range: 473--474Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: James, Paul C - Smith, Alan R.,Type: ArticleIn: The Canadian field-naturalistVolume: 101Series:Issue: 4Date: 1997Page Range: 592--594Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Warkentin, Ian George, - James, Paul CType: ArticleIn: The journal of raptor researchVolume: 24Series:Issue: 1-2Date: 1990Page Range: 5--11Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: