Meleagris gallopavo or "gobbler" that emerged from the woods all by himself, which is unusual. They're usually in flocks when seen around here, but will separate from their flock during mating season to reduce competition. Female turkeys are usually duller brown, and don't have beards (the protruding feather on the front of the breast).
There are about 5 million turkeys in the U.S. They're found in every state except for Alaska. Ever seen one in your yard?