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By: Toyne, E. P. - Ashford, R. W.Type: ArticleIn: The journal of raptor researchVolume: 31Series:Issue: 1Date: 1997Page Range: 81--83Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Toyne, E. P. - Jeffcote, M TType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 114Series:Issue:Date: 1994Page Range: 124--127Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Toyne, E. P. - Ostroznik, HType: ArticleIn: The journal of raptor researchVolume: 31Series:Issue: 1Date: 1997Page Range: 89--89Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-Subjects:
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By: Toyne, E. P. - Flanagan, Jeremy N MType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 117Series:Issue:Date: 1997Page Range: 257--263Publication Info: London, British Ornithologists' Club, 1893-Subjects: