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By: Angehr, G R - Christian, D GType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 120Series:Issue:Date: 2000Page Range: 173--178Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Angehr, G R - Christian, D G - Aparicio, K. M.Type: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 124Series:Issue:Date: 2004Page Range: 51--62Publication Info: London, British Ornithologists' Club, 1893-Subjects: