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By: Kirkley, John SType: ArticleIn: The journal of raptor researchVolume: 25Series:Issue: 3Date: 1991Page Range: 82--86Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Kirkley, John S - Springer, M AType: ArticleIn: Raptor researchVolume: 14Series:Issue: 1Date: 1980Page Range: 22--28Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Kirkley, John S - Gessaman, James AType: ArticleIn: The Wilson bulletinVolume: 102Series:Issue: 1Date: 1990Page Range: 71--83Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects: