Such behavior is generally not known to occur among cowbirds. A Brown-headed Cowbird nestling (R) in the nest with a same-aged Indigo Bunting nestling (L). The video below depicts a 6-day-old ...

The brown-headed cowbird is a species common throughout the United States and doesn’t build its own nest. It uses other birds’ nests to raise their baby birds. The brown-headed cowbird got its ...

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 ...

ater - the brown-headed cowbird ... improve likelihood of cowbird detection rates, In addition, nests were sampled (33 in 1996 and 98 in 1997) by visual checks every 3-4 d in 1996 and 3-7 d in 1997.

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 cowbirds remove host eggs and nestling cowbirds ...

For hosts of brood parasitic birds, the costs of parasitism range from diminished nestling growth rate ... mistakenly courting heterospecifics. Brown-headed Cowbirds seem to rely on a combination ...

That said, food and water supplies may also attract birds you don’t want, like the cowbird. Brown-headed cowbirds ... female ...