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  1. By: Fjeldså, Jon - Baiker, Jan - Engblom, Gunnar - Franke, Irma - Geale, David - Krabbe, Niels K - Lane, Daniel F - Lezama, Miguel - Schmitt, Fabrice - Williams, Robert S. R. - Ugarte-Núnñez, Joaquiín - Yábar, Virgilio - Yábar, Ramiro
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 132
    Issue: 3
    Date: 2012
    Page Range: 180--193
    Publication Info: London, British Ornithologists' Club, 1893-