If you’re heading south into the Keys from the Miami or Fort Lauderdale areas, Key Largo is the first island you hit. State parks offer great opportunities for bird watching and nature photography, but many, like John Pennekamp Coral Reef State Park, charge entrance fees. So head to the Florida Keys Wild Bird Center (near Mile Marker 93) to see rescued and rehabilitated wild birds. The bird sanctuary — fkwbc.org — accepts donations but has free admission. Free brochures guide you through boardwalks surrounded by falcons and other wild birds in cages. Watch out for wild pelicans walking the boardwalk — they won’t bite but they also won’t get out of your way. Cross over the Mangrove Wetland to a beach where birds roam freely. A bicycle and pedestrian corridor known as the Florida Keys Overseas Heritage Trail starts in Key Largo (Mile Marker 106) and stretches 70 miles (about 113 kilometers). It will eventually run the length of the Keys parallel to U.S. Highway 1.