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By: Siegfried, W RoyType: ArticleIn: The Wilson bulletinVolume: 88Series:Issue: 4Date: 1976Page Range: 566--574Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Siegfried, W RoyType: ArticleIn: The Canadian field-naturalistVolume: 86Series:Issue: 1Date: 1972Page Range: 86--86Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: