The male’s combination of glossy black body and brown head is diagnostic. The female is extremely similar to the vagrant shiny cowbird female. However, the brown-headed is paler overall ...

The brown-headed cowbird is a species common throughout ... Or should I say non-nesting strategy? You see, the female cowbird does not build her own nest. Nor does she incubate her own eggs ...

Brown-headed cowbirds, commonly referred to as ... of the 3-5 host young. Although each cowbird female only lays one egg in a ...

Brood parasite, lays eggs in other birds’ nests. A female cowbird may lay as many as 40 eggs during the nesting season. Eggs are white with brown spots and are usually larger than host eggs. Female ...

The brown-headed cowbird (Molothrus ater ... and current information on population sex ratios and female cowbird egg laying. Once this information has been gathered, bioenergetic and economic models ...

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 Brown-headed cowbird is one of two cowbird species in North America ... Cowbirds were measured with additional playback of female chatters to improve likelihood of cowbird detection rates, In ...