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By: Ely, Craig R - Douglas, David C. - Fowler, Ada C - Babcock, Christopher A - Derksen, Dirk V - Takekawa, John Yutaka,Type: ArticleIn: The Wilson bulletinVolume: 109Series:Issue: 4Date: 1997Page Range: 679--692Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects: