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 faint streaks. This bird prefers wooded areas, especially near water, where it can find its main food source: caterpillars and other insects. During the breeding season, the Black-billed Cuckoo is known for its unique call, which sounds like "cu-coo." It is a migratory species, traveling to Central America for the winter. The bird is often elusive, making it challenging to spot in its natural habitat, but its presence is an important indicator of ecosystem health.