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By: Watson, Richard T. - Thomsett, Simon - O'Daniel, Donna - Lewis, RType: ArticleIn: The journal of raptor researchVolume: 30Series:Issue: 1Date: 1996Page Range: 21--27Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: O'Daniel, Donna - Schneeweis, JamesType: ArticleIn: The Canadian field-naturalistVolume: 106Series:Issue: 2Date: 1992Page Range: 268--268Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: