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By: Walters, Michael, - Russell, Douglas G D - Steinheimer, Frank D - Quaisser, ChristianeType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 127Series:Issue:Date: 2007Page Range: 226--227Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Maurer, Golo - Russell, Douglas G D - Woog, Friederike - Cassey, PhillipType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 130Series:Issue:Date: 2010Page Range: 208--214Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Russell, Douglas G D - Wright, SheilaType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 134Series:Issue: 4Date: 2014Page Range: 286--290Publication Info: London, British Ornithologists' Club, 1893-Subjects: