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  1. By: Silva, S I - Lazo, Ivan - Silvaaranguiz, E - Jaksić, F. M. (Fabian Miguel), - Meserve, P L - Gutiérrez, Julio R.,
    Type: Article
    In: The journal of raptor research
    Volume: 29
    Issue: 4
    Date: 1995
    Page Range: 250--255
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  2. By: Jaksić, F. M. (Fabian Miguel), - Lazo, Ivan
    Type: Article
    In: The Wilson bulletin
    Volume: 111
    Issue: 4
    Date: 1999
    Page Range: 527--535
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Vuilleumier, François, - Capparella, Angelo P. (Angelo Paul), - Lazo, Ivan
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 113
    Date: 1993
    Page Range: 85--87
    Publication Info: London, British Ornithologists' Club, 1893-