By Linda Tancs

Just outside Cambridge, Maryland, Blackwater National Wildlife Refuge was established in 1933 as a waterfowl sanctuary for birds migrating along the Atlantic Flyway. And what better time to visit than this year, the Year of the Bird, which marks the centennial of the Migratory Bird Treaty Act, the most powerful and important bird-protection law ever passed. Every month at the refuge marks its own milestones. In September, ospreys migrate to South and Central America, and songbird migration peaks as well in late September and early October. Waterfowl numbers also gradually increase, like egrets and herons (until cold weather pushes them south). Of particular note year round are the bald eagles; Blackwater is the center of the greatest density of breeding bald eagles on the east coast north of Florida. You can take in the sights via Wildlife Drive, four land trails and three water trails.