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.
yellow body brown head bird
Common Grackles have iridescent heads that often look blue in the right light, and their bodies are a sort of brownish, iridescent black.
a bird
a bird
brown headed cow bird
Bald Eagle.
a 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.
eagle
This type of bird is a vulture. Vultures usually have black feathers, though, not brown.
vulture
vultures.
The Bald Eagle