After more than a century without them, an estimated 3,000 turkeys from Muttontown Preserve to Long Island's East End now roam, strut, gobble, and preen in woods, farms and backyards. Much like deer , say biologists, they are ravaging farms, chewing homeowners, plants, and leaving behind huge droppings as a result. The Department of Environmental Conservation has just approved the first ever wild turkey hunt here to coincide with Thanksgiving.