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  1. By: Sánchez, Julio E. - Zook, James R. - Carman, Ernesto - Sandoval, Luis
    Type: Article
    In: Check list : journal of species lists and distribution
    Volume: 10
    Issue: 2
    Date: 2014-5-1
    Page Range: 420--422
    Publication Info: [São Paulo, Brazil] Luís Felipe Toledo 2005-
    Subjects: abundance  Costa Rica  Distribution  Redhead  Ruddy Duck