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By: Borrett, R. P. - Jackson, H DType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 90Series:Issue:Date: 1970Page Range: 124--129Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Jackson, H DType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 105Series:Issue:Date: 1985Page Range: 51--54Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Jackson, H DType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 109Series:Issue:Date: 1989Page Range: 100--106Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Jackson, H DType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 133Series:Issue: 2Date: 2013Page Range: 116--124Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Jackson, H DType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 134Series:Issue: 1Date: 2014Page Range: 62--69Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Jackson, H DType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 135Series:Issue: 3Date: 2015Page Range: 247--266Publication Info: London, British Ornithologists' Club, 1893-Subjects: