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By: Orenstein, Ronald I - Pratt, H DouglasType: ArticleIn: The Wilson bulletinVolume: 95Series:Issue: 2Date: 1983Page Range: 184--198Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Conant, Sheila - Pratt, H Douglas - Shallenberger, Robert JType: ArticleIn: The Wilson bulletinVolume: 110Series:Issue: 1Date: 1998Page Range: 1--22Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Pratt, H Douglas - Retter, Michael L P - Chapman, Douglas - Ord, W Michael - Pisano, PaulType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 129Series:Issue:Date: 2009Page Range: 87--91Publication Info: London, British Ornithologists' Club, 1893-Subjects: