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
Saffron finch in the Emberizidae but it is close to the seedeaters. The male is bright yellow with an orange crown which distinguishes it from most other yellow finches (the exception being the orange-fronted yellow finch). The females are more confusing and are usually just a slightly duller version of the male, but in the southern subspecies "S. f. pelzelni" they are olive-brown with heavy dark streaks. Typically nesting in cavities, the saffron finch makes use of sites such as abandoned rufous hornero ("Furnarius rufus") nests, bamboo branches and under house roofs - this species is tolerant of human proximity, appearing at