Brown-Headed Cowbird

This is a female cowbird. These birds are
damaging to the songbird populations.
They used to follow the buffalo herds and would lay eggs in other birds nests and let the other birds act as foster parents.
The cowbird baby was usually bigger and stronger than the foster parents babies and will out compete them for food and sometimes even push them out of the nest.
The male looks similar to the female but has a darker body and a brown head.