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2. Sharpe, R. B. (1901). A Hand-list of the Genera and Species of Birds. British Museum of Natural History, London, UK.
3. Brabourne, L., and C. Chubb (1912). The Birds of South America. Taylor & Francis, London, UK.
4. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History and including all species and subspecies known to occur in North America, Mexico, Central America, South America, the West Indies, and islands of the Caribbean Sea, the Galapagos Archipelago, and othe
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