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By: Blair, Charles L.Type: ArticleIn: Raptor researchVolume: 15Series:Issue: 4Date: 1981Page Range: 120--120Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Blair, Charles L. - Schitoskey, FrankType: ArticleIn: The Wilson bulletinVolume: 94Series:Issue: 1Date: 1982Page Range: 46--54Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects: