In 1939 the agency that became the North Carolina Wildlife Resources Commission released 29 Pennsylvania beavers in the Coastal Plain in what is now the Sandhills Game Land. The beavers thrived, and by 1953 their population, estimated at 1,000 animals, stretched into seven counties. Because their pelts remained valuable, the stocking program was continued between 1951 and 1956, with 54 beavers released in nine other counties. By the early 2000s, beavers&emdash;natural engineers that take down trees to create dams and shallow ponds&emdash;had become so successful that regulated trapping was necessary in some regions to diminish timber damage and flooding in populated or agricultural areas. Although sometimes causing damage, beaver ponds also provide ideal habitats for creatures such as kingfishers, muskrats, and wood ducks. In fact, North Carolina's native wood duck population and harvests have increased concurrent with the rise in the beaver population.