34 shorebird species. 1,000,000 total numbers. Narrow beach, dunes, intertidal estuarine marsh, intertidal sand and mudflats. Sandy beaches, mudflats, dunes, salt marshes, freshwater wetlands. Northbound migration of shorebirds coincides with horseshoe crab spawning in the bay.
Shorebirds move between the beaches and marshes for feeding, resting, and roosting.
Total counts during the 6-week migration period peaked to over 600,000. A series of primarily sandy barrier islands. Habitats include fresh water impoundments, beach, dune, marsh, maritime forests, and mudflats. The area hosts numbers of shorebirds well exceeding 500,000 annually. It has one of the largest known wintering concentrations of American Oystercatchers.