India has over 500 animal sanctuaries, referred to as Wildlife Sanctuaries (IUCN Category IV Protected Area). Among these, the 28 Tiger Reserves are governed by Project Tiger, and are of special significance in the conservation of the tiger. Some wildlife sanctuaries are specifically named Bird Sanctuary, e.g. Keoladeo National Park before it attained National Park status. Many National Parks were initially wildlife sanctuaries. Wildlife sanctuaries of national importance to conservation, usually due to some flagship faunal species, are named National Wildlife Sanctuary, like: