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By: Wilson, R. Randy - Cooper, Robert JType: ArticleIn: The Wilson bulletinVolume: 110Series:Issue: 2Date: 1998Page Range: 226--232Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Cooper, Robert JType: ArticleIn: The Wilson bulletinVolume: 93Series:Issue: 3Date: 1981Page Range: 363--371Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects: