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By: Bierregaard, Richard O., - Stotz, Douglas F. (Douglas Forrester), - Harper, L H - Powell, George Van NostrandType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 107Series:Issue:Date: 1987Page Range: 134--137Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Powell, George Van Nostrand - Bjork, Robin D - Ogden, John C - Paul, Richard T - Powell, A Harriett - Robertson, William BType: ArticleIn: The Wilson bulletinVolume: 101Series:Issue: 3Date: 1989Page Range: 436--457Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects: