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By: Hiraldo, Fernando - Donázar, José Antonio - Ceballos, Olga - Travaini, Alejandro - Bustamante, Javier - Funes, Martín C.Type: ArticleIn: The Wilson bulletinVolume: 107Series:Issue: 4Date: 1995Page Range: 675--685Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects: