The Lark Buntings (Calamospiza melanocorys) are medium-sized sparrows that occur naturally in Northern America. Their numbers have decreased due to loss of their natural prairie habitat.
This species has been named the state bird of Colorado.
Lark Buntings have small grey bills and white wing patches.
Breeding adult males have a black plumage except for the white wing patches. Outside the breeding season, they look similar to females.
Females and immature birds have a sparrow-like plumage, with a dark brown upper plumage and white under parts. There is streaking on the back, breast and flanks. The wings are dark with brown edges.
These migratory birds breed in the prairie regions of central Canada, as well as mid-western United States. They migrate in flocks to winter in southern Texas and Mexico.
Nesting / Breeding
Their nest is an open cup typically placed on the ground in a grassy area. They nest in dispersed colonies.
Diet / Feeding
They mostly feed on insects in summer and seeds in winter.
They typically forage on the ground, but may take short flights in pursuit of insects.
Outside of the nesting season, they often feed in flocks.
Calls / Vocalizations
Their songs are described as a mix of whistles and trills; and their calls as a soft hoo.
Breeding males establish breeding territories and will fly up and sing while descending to declare ownership.
Species Research by Sibylle Johnson
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