The prairie pothole lakes region that surrounds Fort Sisseton is a haven for birds. Birds and waterfowl were found in abundance when the military arrived at Fort Sisseton. In 1868 and 1869, Fort surgeon Dr. B. Knickerbocker recorded 44 species of birds on the military reservation. He even saw two rare species of birds while they nested - migratory Trumpeter Swans and Sandhill Cranes.
Today, birders can witness several species of waterfowl including Double Breasted Cormorants, Great Blue Herons, Pelicans, Canada Geese and a great variety of ducks. Other birds common to South Dakota that can be found on the Coteau des Prairie include Warblers, White and Red-Breasted Nuthatches, Hairy and Downy Woodpeckers, Red-Tailed Hawks and Bald Eagles.