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By: Erickson, Albert Windell - Mossman, Harlan W. - Hensel, Richard J. - Troyer, Willard A.Type: ArticleIn: Zoologica : scientific contributions of the New York Zoological SocietyVolume: 53Series:Issue: 7Date: 1968-11-29Page Range: 85--105Publication Info: New York,Subjects:
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By: Knight, Richard L. - Erickson, Albert WindellType: ArticleIn: Raptor researchVolume: 10Series:Issue: 4Date: 1976Page Range: 108--111Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects: