This list contains 397 species that have been observed on the refuge since 1940. Species are listed in accordance with the 7th edition (1998) AOU Checklist of North American Birds and the 55th Supplement of AOU Checklist (July 2017).
"Once in a great while, a natural history book changes the way people look at the work. In 1838, John James Audubon's Birds of America was one . . . In 1934, Roger Tory Peterson produced Field Guide to the Birds . . . Now comes The Sibley Guide to Birds." -The New York Times.