The Brown-headed cowbird was referred to in early literature as the "buffalo bird" presumably because it commonly foraged on insects flushed under the feet of ungulates.
It is a brood parasite, laying its eggs in nests of other species and leaving the rearing of young to surrogate parents. This has had serious consequences for many host species within the cowbirds' range.
In Oregon, the Brown-headed cowbird is a common migrant and breeder in open habitats and woodland edges in all parts of the state. It is most abundant in agricultural land, sagebrush and juniper steppe, coastal scrub, riparian zones, and suburban areas.