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By: Sandoval, Luis - Sanchez, Cesar - Biamonte, Esteban - Zook, James R. - Sánchez, Julio E. - Martinez, Daniel - Loth, DarylType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 130Series:Issue:Date: 2010Page Range: 237--245Publication Info: London, British Ornithologists' Club, 1893-Subjects: