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By: Becking, Jan-Hendrik,Type: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 129Series:Issue:Date: 2009Page Range: 18--48Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Becking, Jan-Hendrik,Type: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 126Series:Issue:Date: 2006Page Range: 117--122Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Becking, Jan-Hendrik,Type: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 126Series:Issue:Date: 2006Page Range: 123--136Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Becking, Jan-Hendrik,Type: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 114Series:Issue:Date: 1994Page Range: 211--224Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Becking, Jan-Hendrik,Type: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 108Series:Issue:Date: 1988Page Range: 195--206Publication Info: London, British Ornithologists' Club, 1893-Subjects: