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By: Marchant, SType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 83Series:Issue:Date: 1963Page Range: 52--56Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Marchant, SType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 98Series:Issue:Date: 1978Page Range: 129--131Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Marchant, SType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 81Series:Issue:Date: 1961Page Range: 134--141Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Marchant, SType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 82Series:Issue:Date: 1962Page Range: 123--124Publication Info: London, British Ornithologists' Club, 1893-Subjects: