The Yellow Warbler’s habitat is bushes, swamp edges, streams and gardens. Their nest is attractive, made up of fluffy fibers such as milkweed, fine grasses and bark strips. It sometimes can be easy to see as it is usually placed from 3 to 10 feet from the ground. Many yellow warbler nests are parasitized by Brown-headed Cowbirds. That means that cowbirds often lay their eggs in the Yellow Warbler’s nest rather than build a nest of their own. Many Yellow Warblers recognize cowbird eggs and either abandon the nest or build another nest on top of the old one. Nests with up to six layers of nests have been found.
