The male blue grosbeak has brown wings, but your bird could be one in the process of moulting, or replacing old feathers with new ones, giving it an unusual appearance. If the bird is smaller, could be an indigo bunting, going through the same moulting process.
A mallard is a bird that has an iridescent green head and brown on the body. The ring necked pheasant is another bird with a brown body, and an iridescent green head.
Blue bird
Bald Eagle.
brown headed cow bird
It could be a bird in the pheasant family. Ring-neck pheasants have primarily brown bodies with some mottling of colors with a blue to blue/green head. One variation of the ring-neck is called an Afghan which looks like the ring-neck but has no white ring on the neck.
vulture
vultures.
a bald eagle
The Bald Eagle
vulture
vulture
Bald Eagle.