The federally-endangered Cape Sable seaside sparrow (Ammodramus maritimus mirabilis). This bird is down to about 2,000 individuals and declining. Nearly all of this species is found within the Everglades National Park in southern Florida.
Tourists use the boardwalks, that are designed to protect the island’s fragile surfaces, on Bartholomew Island. The movie Master and Commander was filmed on this young island.