The center of the distribution of the Black-capped Parakeet (also known as the Rock Parakeet) is in the lowlands of southeastern Peru. This species also occurs in westernmost Brazil and in northern Bolivia, and its elevational distribution extends up to 2000 m. The Black-capped Parakeet is mostly green, with a dusky brown crown. The center of the feathers of the breast also are dusky, but the tips of these feathers are buffy or whitish breast, forming a scaled pattern. The leading edge of the wing is red, and the upper surface of the tail is green. The Black-capped Parakeet is superficially similar to the Maroon-tailed Parakeet (Pyrrhura melanura) of northwestern Amazonia, although the distributions of these two species are not known to overlap. Locally, the Black-capped Parakeet is sympatric with the very different Rose-fronted Parakeet (Pyrrhura roseifrons). Near the border between Peru and Bolivia, the distribution also approaches that of the Green-cheeked Parakeet (Pyrrhura molinae), which has a green crown, a red belly, and red in the tail. In typical Pyrrhura fashion, Black-capped Parakeets fly in small, close flocks, often in twisting flight through the canopy; otherwise very little is known about the biology of this species.