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By: Kirwan, Guy M - Grieve, AndrewType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 130Series:Issue:Date: 2010Page Range: 83--87Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Kirwan, Guy M - Grieve, AndrewType: ArticleIn: Bulletin of the African Bird ClubVolume: 14Series:Issue: 2Date: 2007-08Page Range: 159--169Publication Info: Cambridge, African Bird Club, 1994-Subjects:
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By: Grieve, Andrew - Kirwan, Guy MType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 132Series:Issue: 3Date: 2012Page Range: 194--206Publication Info: London, British Ornithologists' Club, 1893-Subjects: