Bobolinks breed in North American grasslands and migrate to South America for winter. In breeding plumage, males are marked by a white back and a yellow rear crown.
Breeding males are mostly black with a large white patch on the back and a pale yellow rear crown. Females, young birds, and males outside breeding plumage look browner.
It nests in tall grass in grassy fields and wetlands. During migration, it may also stop in rice fields.
An extinction-risk assessment has not been added yet.