Waubay National Wildlife Refuge (Refuge), comprised of 4,650 acres, islocated in Day County in northeastern South Dakota (Map 1). The Refuge'smix of lakes, wetlands, prairie, forests, and cropland is home to a diversityof wildlife. More than 100 bird species nest on this small piece of habitat, with 37 mammals also calling it home. Waubay National Wildlife Refuge(NWR) was established by President Roosevelt in 1935 as "a refuge andbreeding ground for migratory birds and other wildlife.