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By: Steadman, David W. - Olson, Storrs L. - Barber, John C. - Meister, C A - Melville, M EType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 100Series:Issue:Date: 1980Page Range: 155--158Publication Info: London, British Ornithologists' Club, 1893-Subjects: