What is cowbirds main shelter?

Cowbirds primarily seek shelter in trees, shrubs, and other dense vegetation where they can find protection from predators and harsh weather. They often prefer habitats such as grasslands, open woodlands, and edges of forests. Cowbirds are known for their brood parasitism, laying their eggs in the nests of other bird species rather than building their own nests. This behavior often leads them to areas where suitable host nests are available.