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By: Greeney, Harold F - Martin, Paul R - Gelis, Rudolphe A - Bonier, Fran - Freeman, Benjamin G - Miller, Eliot TType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 131Series:Issue: 1Date: 2011Page Range: 24--31Publication Info: London, British Ornithologists' Club, 1893-Subjects: