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Auteur Rafael R. Angel |
Documents disponibles écrits par cet auteur (2)
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Article
Karl S. Berg, Auteur ; Jacqueline Socola, Auteur ; Rafael R. Angel, AuteurThe Great Green Macaw (Ara ambiguus) is one of the largest New World parrots and is considered endangered with extinction. Their precarious decline in western Ecuador has been attributed to food scarcity, among other pressures. To understand the[...]![]()
Article
Karl S. Berg, Auteur ; Rafael R. Angel, AuteurData from roosts of Amazona parrots may be useful in creating demographic models, because these birds exhibit high roost fidelity and pairs are conspicuous in flight. However, few investigators have attempted to track changes in the number of pa[...]



