The name of the large wildlife reserve located in Louisiana, famous for birdwatching, is Bayou Sauvage National Wildlife Refuge.

Bayou Sauvage National Wildlife Refuge is located near New Orleans, Louisiana, and is known for its diverse ecosystems, including wetlands, marshes, and bayous. It is a popular spot for birdwatching, particularly for migratory birds. The other choices, Big Bend, Everglades, and Yellowstone, are not in Louisiana; they are in other parts of the United States.