This small seedeater has a thick, curved bill; males are gray and females olive-brown. It eats bamboo seeds and moves in response to bamboo seeding.
Males are mostly gray with a pale belly and a curved yellow bill. Females are olive-brown above with pale underparts and a dark bill.
It feeds mainly on bamboo seeds and moves to areas where bamboo is seeding. It uses secondary forest and forest edges with bamboo, foraging from the middle to upper tree layers.
An extinction-risk assessment has not been added yet.