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  1. By: Sánchez González, Luis Antonio - Navarro-Sigüenza, Adolfo G. (Adolfo Gerardo) - Peterson, A Townsend - Garcia-Moreno, Jaime
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 127
    Date: 2007
    Page Range: 34--49
    Publication Info: London, British Ornithologists' Club, 1893-