Refuge on more than 42,000 acres on Gulf Intracoastal Waterway; nesting area for mottled ducks and ancestral wintering grounds of snow geese. Freeport Christmas Bird Count always one of highest in nation; since area established in 1966, 247 bird species identified here. Access by boat for fishing, crabbing, oystering (permitted in public waters), and waterfowl hunting in specified areas. Six-mile self-guided auto tour and hiking trail. Open first full weekend of every month.