The black-billed cuckoo is a medium-sized bird found primarily in North America. It has a distinctive black bill, olive-brown upperparts, and white underparts with dark streaks. This bird prefers wooded areas, especially near water, where it can find its favorite food: caterpillars and other insects. During the breeding season, the black-billed cuckoo is known for its soft, cooing calls. It builds its nest in shrubs or trees, laying about 3 to 5 eggs. Unlike many birds, the black-billed cuckoo often practices brood parasitism, laying its eggs in the nests of other bird species, such as American robins.