A brown-headed cowbird laid the speckled egg in this blue grosbeak nest. The cowbird chick will push out or out-compete the chicks of the host bird.
A brown-headed cowbird laid the speckled egg in this blue grosbeak nest. The cowbird chick will push out or out-compete the chicks of the host bird.
A brown-headed cowbird laid the speckled egg in this blue grosbeak nest. The cowbird chick will push out or out-compete the chicks of the host bird.

Brown-headed cowbirds leave their eggs in other species’ nests

July 25, 2018 07:53 PM