Cedar Island Wildlife Management Area in Somerset County, Maryland, near Crisfield on Tangier Sound in the Chesapeake Bay, protects nearly 3,000 acres of coastal habitat shaped by the bay and its marshy shoreline. It was established chiefly to preserve black duck habitat and is especially known for the concentration of that species there. Its importance rests in serving as a managed refuge for waterfowl within the broader Chesapeake Bay environment.