Ruffed grouse, a timber-haunting fowl seen across much of the northern U.S. and down the chain of the Appalachians, feast on wild grapes and seeds. So do wild turkeys, one of North America's biggest native birds, as well as the nonnative but widespread ring-necked pheasant.
Cedar waxwings, American robins, northern flickers, tanagers, blue jays, juncos and mockingbirds, to name only a few, feast on grape seeds.
The catbird grape, a species native to parts of North America, gets its name from the gray catbird, a handsome relative of the mockingbird. Catbirds not only eat grapes; they also nest in the vine tangles.