_People flock from around the region to see them congregated in winter by the thousands and sometimes tens of thousands at the Hiwassee Refuge northeast of Chattanooga. "There is no reason to hunt that bird ˜ a 4-foot-tall bird like that," longtime birder Michael Bierly said. "They say it's going to be limited hunting, but limited for how long?" The leadership of the Tennessee Ornithological Society is more circumspect. "Our big concern is the precedent of taking a non-game species and making it a game species," said Dick Preston, group president. The nonprofit Tennessee Wildlife Federation, which asked for the change, doesn't see a problem. "There are several people who would like to be able to hunt them on a limited basis in the state," said Mike Butler, CEO of the conservation, hunting and fishing advocacy group. "Regulated hunting has never been responsible for the decline of a species in the United States. By definition, it's regulated."