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By: Haverschmidt, FType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 87Series:Issue:Date: 1967Page Range: 136--137Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Haverschmidt, FType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 86Series:Issue:Date: 1966Page Range: 144--147Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Haverschmidt, FType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 86Series:Issue:Date: 1966Page Range: 5--6Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Haverschmidt, FType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 86Series:Issue:Date: 1966Page Range: 33--35Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Haverschmidt, FType: ArticleIn: The Wilson bulletinVolume: 65Series:Issue: 4Date: 1953Page Range: 242--251Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Haverschmidt, FType: ArticleIn: The Wilson bulletinVolume: 83Series:Issue: 2Date: 1971Page Range: 124--128Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Haverschmidt, FType: ArticleIn: The Wilson bulletinVolume: 86Series:Issue: 3Date: 1974Page Range: 215--220Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Haverschmidt, FType: ArticleIn: The Wilson bulletinVolume: 71Series:Issue: 2Date: 1959Page Range: 175--177Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Haverschmidt, FType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 86Series:Issue:Date: 1966Page Range: 101--102Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Haverschmidt, FType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 102Series:Issue:Date: 1982Page Range: 75--77Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Haverschmidt, FType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 91Series:Issue:Date: 1971Page Range: 18--18Publication Info: London, British Ornithologists' Club, 1893-Subjects: