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By: Littlefield, C D - Thompson, Steven P. - Ehlers, Bradley D.Type: ArticleIn: Raptor researchVolume: 18Series:Issue: 1Date: 1984Page Range: 1--5Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]Subjects:
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By: Littlefield, Carroll D - Thompson, Steven P.Type: ArticleIn: The Great Basin naturalistVolume: 41Series:Issue:Date: 1981Page Range: 440--444Publication Info: Provo, Utah, M.L. Bean Life Science Museum, Brigham Young University,Subjects: