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By: Chapin, James P. (James Paul), - Chapin, Ruth T. (Ruth Trimble) - Short, Lester L. - Horne, J F MType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 107Series:Issue:Date: 1987Page Range: 32--35Publication Info: London, British Ornithologists' Club, 1893-Subjects: