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By: Burger, Alan E.Type: ArticleIn: The Canadian field-naturalistVolume: 107Series:Issue: 2Date: 1993Page Range: 164--176Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Burger, Alan E.Type: ArticleIn: The Wilson bulletinVolume: 96Series:Issue: 1Date: 1984Page Range: 20--33Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Burger, Alan E. - Betts, MichaelType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 121Series:Issue:Date: 2001Page Range: 236--246Publication Info: London, British Ornithologists' Club, 1893-Subjects: