- Established in 1904, Breton National Wildlife Refuge (NWR) is the second oldest refuge in the National Wildlife Refuge System. The area above mean high tide is approximately 6,923 acres. In 1975, the refuge was established as a National Wilderness Area. In May 1990, an agreement was signed between the Louisiana Department of Wildlife & Fisheries (LDWF) and the U.S. Fish and Wildlife Service (Service). The agreement gave the Service management rights and law enforcement authority on State-owned islands (including Curlew, North, New Harbor, Free Mason, North and South Grand Gosier, and Old Harbor Island Shoal) in and adjacent to Breton and Chandeleur Sounds. The Service's jurisdiction extends 800 feet out from mean low tide. This agreement added about 11,350 acres to the refuge. The dominate vegetation on Breton NWR is black mangrove, groundsel bush and wax myrtle. Over 10,000 endangered brown pelicans were recorded nesting on the refuge. Nesting tern populations are also high, including royal tern, caspian tern and least terns. The Chandeleur Islands winter peak population of 25,000 redhead ducks.
Recreation - Primitive camping and fishing are popular.
Breton NWR includes Breton Island and all of the Chandeleur Islands in St. Bernard Parish, LA.