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By: Berger, Daniel D. - Anderson, Daniel W. - Weaver, James D. - Risebrough, Robert W.Type: ArticleIn: The Canadian field-naturalistVolume: 84Series:Issue: 3Date: 1970Page Range: 265--267Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Bird, David M. - Ritchie, Ian - Weaver, James D. - Bowman, ReedType: ArticleIn: The Canadian field-naturalistVolume: 104Series:Issue: 2Date: 1990Page Range: 219--221Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Cade, Tom J. - Weaver, James D. - Platt, J B - Burnham, William A.,Type: ArticleIn: Raptor researchVolume: 11Series:Issue: 1-2Date: 1977Page Range: 28--48Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects: