The lark bunting (Calamospiza melanocorys) is a medium-sized American sparrow native to central and western North America. It was designated the state bird of Colorado in 1931.
Lark buntings are small songbirds, with a short, thick, bluish bill. There is a large patch of white on the wings and they have a relatively short tail with white tips at the end of the feathers. Breeding males have an all black body with a large white patch on the upper part of the wing. Nonbreeding males and females look similar and are grayish brown with white stripes.