Prime Hook National Wildlife Refuge is a 10,144 acre refuge officially established in 1963 under the authority of the Migratory Bird Conservation Act for use as an inviolate sanctuary, or for any other management purpose, for migratory birds. It is located on the west shore of the Delaware Bay, approximately 22 miles southeast of Dover, the State capital, and 64 miles southeast of Wilmington, Delaware. The refuge is an important stopover site for migratory birds as they travel up and down the Atlantic Flyway and provides protected breeding habitat for federally and State-listed threatened and endangered species, as well as many neo-tropical migrating bird species. Prime Hooks habitat features include salt marsh, freshwater marsh, ponds and impoundments, wooded swamps and upland grasslands and forest. Hundreds of native plant and animal species thrive in this mosaic of these diverse cover types that provide habitat for 308 species of birds, 51 species of fish, 45 species of reptiles and amphibians, 37 species of mammals, and an array of rare insect and plant species.