 Bird species at the reserve include the endangered light-footed rail, snowy plover, Savannah sparrow, least tern, Caspian tern, great blue heron, snowy egret, double-crested cormorant, red-tailed hawk, great horned owl, and California gnatcatcher.The history of Bolsa Chica is a long and varied one.The earliest peoples were the native Indians of California.