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  1. By: Parejo, D - Avilés, Jesús M. (Jesús Miguel) - Ferrero Cantisán, Juan José, - Rivera, D - Casas, José M.
    Type: Article
    In: The journal of raptor research
    Volume: 35
    Issue: 2
    Date: 2001
    Page Range: 162--164
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-