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By: Brown, Bryan T. - Mesta, R - Stevens, L E - Weisheit, John S.Type: ArticleIn: The journal of raptor researchVolume: 23Series:Issue: 3Date: 1989Page Range: 110--113Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Brown, Bryan T. - Stevens, L EType: ArticleIn: The journal of raptor researchVolume: 31Series:Issue: 1Date: 1997Page Range: 7--10Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: