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By: Patten, Michael A - Wilson, John CType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 116Series:Issue:Date: 1996Page Range: 266--270Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Clark, William S. - Patten, Michael A - Wilson, John CType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 129Series:Issue:Date: 2009Page Range: 254--255Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Patten, Michael AType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 132Series:Issue: 2Date: 2012Page Range: 128--132Publication Info: London, British Ornithologists' Club, 1893-Subjects: