 Between 1956 and 2007, 246 bird species have been documented.Additionally, 34 mammal species, five reptile species, four amphibian species, and 37 fish species have been observed.Audubon National Wildlife Refuge features a visitor center with exhibits on prairie wetland and grassland habitat, migratory birds, night life of the Refuge, John James Audubon, and the history of the refuge.