Molothrus Ater (Brown-Headed Cowbird) - Range, food habits, reproduction, and behavior of this species. With photos and sound recording. - http://animaldiversity.ummz.umich.edu/site/accounts/information/Molothrus_ater.html
Molothrus Ater - General biology and effects of fire on the brown-headed cowbird. - http://www.fs.fed.us/database/feis/wildlife/bird/moat/