United States of America
Waterfowl production areas (WPAs) are a small component of the National Wildlife Refuge System. There are over 2 million acres (8,100 km2) of this prime duck-producing land, mostly prairie potholes in the Dakotas, Minnesota, and Montana. The U.S. Fish and Wildlife Service owns, leases, or holds ease
Listen to the audio guide for National Waterfowl Production Area Free on WIP — starts by itself when you arrive, even with the screen off