Ring-billed gulls are native to the Nearctic and Neotropical regions. They live across the northern United States and southern Canada. During winter they migrate to the southern United States, Mexico, and Central America. They are also found in Bermuda and Hawaii.
Biogeographic Regions: nearctic (Native ); neotropical (Native )
- Palmer, E., H. Fowler. 1975. Fieldbook of Natural History, 2nd ed. New York: McGraw-Hill, Inc.
- Farrand, J. 1988. Eastern Birds; An Audubon Handbook. New York: McGraw-Hill, Inc.