The Serengeti National Park is a Tanzanian national park in the Serengeti ecosystem in the Mara and Simiyu regions.It is famous for its annual migration of over 1.5 million white-bearded (or brindled) wildebeest and 250,000 zebra and for its numerous Nile crocodile and honey badger.The park covers 14,750 square kilometres (5,700 sq mi) of grassland plains, savanna, riverine forest, and woodlands. The park lies in northwestern Tanzania, bordered to the north by the Kenyan border, where it is continuous with the Maasai Mara National Reserve. To the southeast of the park is the Ngorongoro Conservation Area, to the southwest lies Maswa Game Reserve, to the west are the Ikorongo and Grumeti Game Reserves, and to the northeast and east lies the Loliondo Game Control Area.The park is usually described a divided into 3 regions :The Serengeti Plains ;Western Corridor;Nothern Serengeti.Serengeti National Park has also great ornithological interest, boasting about more than 500 bird species; including Masai ostrich, secretarybird, kori bustards, helmeted guineafowls, Grey-breasted spurfowl, southern ground hornbill, crowned cranes, marabou storks, yellow-billed stork, lesser flamingo, martial eagles, lovebirds, oxpeckers, and many species of vultures. Reptiles in Serengeti National Park include Nile crocodile, leopard tortoise, serrated hinged terrapin, rainbow agama, Nile monitor, chameleons, African python, black mamba, black-necked spitting cobra, puff adder. Since 2005, the protected area is considered a Lion Conservation Unit together with Maasai Mara National Reserve and a lion stronghold in East Africa