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  1. By: Azpiroz, Adrian B - Menendez, Jose L - Jaramillo, Alvaro - Presa, Dardo - Calimares, Carlos - Saralegui, Alvaro M. - Abente, Jose S
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 132
    Issue: 1
    Date: 2012
    Page Range: 46--54
    Publication Info: London, British Ornithologists' Club, 1893-