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By: Dean, W. Richard J. (William Richard John), - Franke, Ursula - Joseph, Grant - Goncalves, Francisco M - Mills, Michael Stuart Lyne - Milton, Suzanne J - Monadjem, Ara - Oschadleus, H DieterType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 132Series:Issue: 1Date: 2012Page Range: 41--45Publication Info: London, British Ornithologists' Club, 1893-Subjects: