Brown-headed Cowbirds (Molothrus ater) are brood parasites that lay their eggs in the nests of host species. Cowbird chicks typically grow up in mixed broods consisting of one or more cowbird chicks ...
The common brown-headed cowbird is the most widespread brood parasite in North America. Polytypic. Length 7.5". A smallish, compact and stocky blackbird with a short and thick-based bill ...
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