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By: Evans, Beth E I - Ashley, Jane - Marsden, Stuart JType: ArticleIn: The Wilson bulletinVolume: 117Series:Issue: 2Date: 2005Page Range: 154--164Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Symes, Craig T - Marsden, Stuart JType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 125Series:Issue:Date: 2005Page Range: 11--27Publication Info: London, British Ornithologists' Club, 1893-Subjects: