A small bird that eats grass seeds in open grassy places. Breeding males vary by region, and southern birds often show a bold black breast band.
Breeding males of subspecies morelleti, from southern Mexico to Panama, often have a black head and back, a broad white crescent below the eye, and a black breast band.
It inhabits open grassy places near water, including pastures, roadsides, and marshes with tall grass. It usually perches on grass stems to take seeds from the seedheads; it also eats insects during the breeding season.
An extinction-risk assessment has not been added yet.