The lark sparrow (Chondestes grammacus) is a large New World sparrow in the Passerellidae family. It breeds in southern Canada, much of the United States, and northern Mexico. It is much less common in the east, where its range is contracting. The populations in Mexico and adjacent states of the United States are resident, but other birds are migratory, wintering in the southern United States, Mexico and south to Guatemala.
The breeding habitat is a variety of open habitats including grasslands and cultivation.
They forage on the ground or in low bushes. They mainly eat seeds, but insects, including grasshoppers, are also eaten in the breeding season.