Upper Souris National Wildlife Refuge is located in the Souris River Valley of northwestern North Dakota. The Refuge extends 35 miles along the Souris River corridor. This Refuge, managed by the U.S. Fish and Wildlife Service, is an important unit in a series of national wildlife refuges in the waterfowl migration corridor known as the Central Flyway. This Refuge was set aside "...as a refuge and breeding ground for migratory birds and other wildlife...".

There are a number of trails on the refuge good for birding - https://www.fws.gov/refuge/upper-souris/visit-us/trails.