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By: Van Dyke, Fred,Type: ArticleIn: The Canadian field-naturalistVolume: 121Series:Issue: 2Date: 2007-04-01Page Range: 133--141Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Van Dyke, Fred,Type: ArticleIn: Raptor researchVolume: 15Series:Issue: 4Date: 1981Page Range: 122--122Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects: