North Carolina's Outer Banks have attracted hunters for over 150 years. Well into the 20th-century, the islands were dotted with lodges of gunning clubs, which have since been absorbed into national park lands. Waterfowl was the target of most of the clubs, but an introduced bird, the ring-necked pheasant, also provided sport. The only self-sustaining pheasant population in the state lives on the Outer Banks. Studies have failed to determine why they thrive there and nowhere else. The Cape Hatteras National Seashore does not allow pheasant hunting, but hunting is allowed in other island areas.