Nanday Parakeet's range extends from southwestern Brazil and southeastern Bolivia south through Paraguay to northern Argentina. It is most commonly found in the Pantanal regions of central South America (Short 1975) and may seasonally forage in the central Chaco region of Paraguay and Argentina (Short 1975) as well as in deciduous and gallery woodlands (Ragusa-Netto 2007).
There also are feral populations in southern California (Garrett 1997), Puerto Rico (where "rare and local"; Raffaele et al. 1998), and in Buenos Aires, Argentina (Nores and Yzurieta 1994).
Distribution outside the Americas
Nanday Parakeet is endemic to South America.
Nanday Parakeet can live in a variety of habitats but usually prefers low, moist areas below 800 m (Juniper and Parr 1998). It favors open savanna as well as areas with Copernicia palms (Juniper and Park 1998) but also inhabits farmlands, campos, and wetlands (Short 1975).
Populations have probably risen by benefitting from increased agricultural production, especially in Paraguay (Forshaw, 1977). The Nanday Parakeet has been introduced into Buenos Aires, California, Spain, Israel, West Indies, Puerto Rico, and Florida (Halliday, 1988).
Arellano, C. (2013). Nanday Parakeet (Aratinga nenday), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.bkhpar.01