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, almost ...

Some consider brown-headed cowbirds to be a threat. Setting up backyard bird feeders and a birdbath is an easy way to enjoy birdwatching in your own yard while supporting local bird populations.

The brown-headed cowbird hatchlings that do survive grow to recognize the calls of other cowbirds. This allows them to return to cowbird flocks once they can leave the host’s nest.

This data set concerns the possible effects of brood parasitism on the species composition of a songbird community. Your instructor will give you directions about using this file to make figures ...