The Lark Bunting (Calamospiza melanocorys) is a distinctive bird species native to North America, particularly prevalent in the western United States. This striking bird typically measures around 6.5 to 7 inches in length, with a wingspan averaging about 10 to 11 inches. In terms of weight, Lark Buntings generally range from 1 to 1.5 ounces, with males often slightly heavier than females.

Distinguishing field marks of the Lark Bunting include its bold black plumage during the breeding season, with striking white wing patches that are especially conspicuous in flight. Males sport a jet-black body contrasted with a bright white wing patch and a white patch on the outer tail feathers. Females and non-breeding males, however, exhibit a more subdued brown and white plumage, lacking the bold black coloration of breeding males.

Lark Buntings are known for their migratory behavior, undertaking extensive seasonal movements. During the breeding season, they inhabit open grasslands, prairies, and sagebrush habitats across the western United States and into Canada. However, as winter approaches, they migrate southward in large flocks to spend the colder months in the southern United States and northern Mexico.

In their wintering grounds, Lark Buntings can be found in a variety of open habitats, including grasslands, agricultural fields, and scrublands. They are often observed foraging on the ground for seeds and insects, using their sturdy bills to crack open seeds and their keen eyesight to spot prey amidst the vegetation. Their distinctive appearance and behavior make them a recognizable and cherished sight for birdwatchers.

Conservation efforts for Lark Buntings often focus on preserving and restoring their grassland habitats, which are increasingly threatened by urbanization, agriculture, and other forms of habitat destruction. Additionally, monitoring their migration patterns and understanding their ecological needs throughout the year are essential for effective conservation strategies aimed at ensuring the long-term survival of this charismatic species.