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  1. By: Sanchez, Cesar
    Type: Article
    In: The Wilson bulletin
    Volume: 114
    Issue: 4
    Date: 2002
    Page Range: 517--519
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Sandoval, Luis - Sanchez, Cesar - Biamonte, Esteban - Zook, James R. - Sánchez, Julio E. - Martinez, Daniel - Loth, Daryl
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 130
    Date: 2010
    Page Range: 237--245
    Publication Info: London, British Ornithologists' Club, 1893-