The Band-tailed Seedeater is a small bird whose male has blue-gray plumage and a white tail band. It feeds in dry montane scrub and other open habitats.
The male is generally slate-blue, with a dark area at the base of its orange bill and chestnut undertail coverts. The female is gray-brown with dark streaks and a yellowish bill. Both sexes have a broad white tail band, more prominent in the male.
It feeds in dry montane scrub and other semi-open habitats.
An extinction-risk assessment has not been added yet.