The Martin Luther King, Jr. Regional Shoreline Park and San Leandro Bay provide vital habitat to thousands of birds. The park's wetland complex—which includes Arrowhead Marsh and a successfully restored 72-acre wetland—hosts some of the most significant populations of shorebirds and waterfowl in the central bay. More than 90 bird species inhabit this area, including the federally endangered California Clapper Rail, a bird found only in San Francisco Bay salt marshes. Endangered California Least Terns and Brown Pelicans also feed in the waters around the site.