Definitions for "Cowbird"
The cow blackbird (Molothrus ater), an American starling. Like the European cuckoo, it builds no nest, but lays its eggs in the nests of other birds; -- so called because frequently associated with cattle.
(See Nestboxes) - small North American blackbird that lays its eggs in the nest of other birds.
North American blackbird that follows cattle and lays eggs in other birds' nests