A refuge within a refuge, the UL Bend National Wildlife Refuge consists of more than 20,000 acres of wilderness entirely within the boundaries of the Charles M. Russell National Wildlife Refuge. Its primary mission at the moment is to rescue one of the nation's most endangered animals: the black-footed ferret. The ferrets depend on the high concentration of prairie dog towns for food. There are also plenty of grouse and burrowing owls, who use abandoned prairie-dog tunnels for homes.
UL Bend National Wildlife Refuge Rd., Charles M. Russell National Wildlife Refuge, Montana, 5953, United States