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By: Robards, Martin D. - Gilchrist, H. Grant - Allard, KarelType: ArticleIn: The Canadian field-naturalistVolume: 114Series:Issue: 1Date: 2000Page Range: 72--77Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Kay, Maureen F. - Gilchrist, H. GrantType: ArticleIn: The Canadian field-naturalistVolume: 112Series:Issue: 3Date: 1998Page Range: 529--532Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Hipfner, J. Mark - Gilchrist, H. Grant - Gaston, Anthony J - Cairns, DavidType: ArticleIn: The Canadian field-naturalistVolume: 116Series:Issue: 1Date: 2002Page Range: 22--25Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Robertson, G J - Gilchrist, H. GrantType: ArticleIn: The journal of raptor researchVolume: 37Series:Issue: 2Date: 2003Page Range: 164--166Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: