Apparently disjunct populations (and separate subspecies) of the Tui Parakeet are found in upper Amazonia, from southeast Colombia south to northeast Bolivia and east across Brazil, and in the lower Amazonian basin of northeast Brazil. The two subspecies differ only marginally in their head patterns, with the eastern taxon also having some yellow on the upper ear coverts, as well as the forehead. Both taxa are otherwise basically green, albeit with some yellowish or bluish elements. The Tui Parakeet feeds primarily on fruit, but has also been recorded visiting manioc fields and sugarcane plantations. The species is a locally abundant resident in riverine habitats, including seasonally flooded forests and second growth, but also in adjacent clearings and semi-open areas. Like most other Brotogeris parakeets, the species’ biology is rather poorly understood and begs serious study.