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By: Holroyd, G L - Banasch, UrsulaType: ArticleIn: The journal of raptor researchVolume: 30Series:Issue: 3Date: 1996Page Range: 145--156Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Holroyd, G L - Banasch, UrsulaType: ArticleIn: The journal of raptor researchVolume: 37Series:Issue: 2Date: 2003Page Range: 98--116Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: