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By: Engel, Kathleen A. - Young, Leonard S. (Leonard Stephen) - Steenhof, Karen - Roppe, Jerry A - Kochert, Michael N. (Michael Nicholas)Type: ArticleIn: The Wilson bulletinVolume: 104Series:Issue: 1Date: 1992Page Range: 105--121Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Engel, Kathleen A. - Young, Leonard S. (Leonard Stephen)Type: ArticleIn: The Wilson bulletinVolume: 104Series:Issue: 3Date: 1992Page Range: 462--471Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Engel, Kathleen A. - Young, Leonard S. (Leonard Stephen)Type: ArticleIn: The journal of raptor researchVolume: 27Series:Issue: 1Date: 1993Page Range: 69--69Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects: