Long-tailed finch length. It has a prominent roundish black bib on its throat and upper chest and a long pointed black tail. It has pinkish brown upperparts with paler plumage below its bib over the lower breast and abdomen. It has a grey head, a white ear-patch, and black lores. It has black patches on its upper flanks and its rump and undertail coverts are white. The beak colour of the adult long-tailed finch varies from red through orange to yellow. The subspecies with red beaks is sometimes called Heck's grass finch "Poephila acuticauda hecki", and the nominate subspecies with orange or
Cuzco brush finch of the Andes. The known elevation range for this brush finch is approximately above sea level. They are mostly seen in the surrounding areas of Cusco. The Cuzco brush finch has complex series of high-pitched squeaks. It is described as "shrill trill followed by a chatter and "tew-tew-tew swee swee"". Their “dawn song” was defined as the varied phrases given at regular intervals by the male alone, mainly or only at dawn and is different than a duet call. They are also known to include loud drawn out notes. Undocumented, but most likely it will eat a mixture of terrestrial