Maasai Mara, also locally known simply as The Mara, is a large national game reserve in Narok, Kenya, contiguous with the Serengeti National Park in Tanzania. It is named in honor of the Maasai people, the ancestral inhabitants of the area, who migrated to the area from the Nile Basin. Their description of the area when looked at from afar: "Mara" means "spotted" in the local Maasai language, due to the many short bushy trees which dot the landscape. Maasai Mara is one of the most famous and important wildlife conservation and wilderness areas in Africa, world-renowned for its exceptional populations of lion, leopard, cheetah and African bush elephant. It also hosts the Great Migration, which secured it as one of the Seven Natural Wonders of Africa, and as one of the ten Wonders of the World. Around July of each year, these animals migrate north from the Serengeti plains in search of fresh pasture, and return to the south around October. The Great Migration is one of the most impressive natural events worldwide, involving some 1,300,000 blue wildebeest, 500,000 Thomson's gazelles, 97,000 Topi, 18,000 common elands, and 200,000 Grant's zebras. The Maasai Mara is the only protected area in Kenya with an indigenous black rhino population, unaffected by translocations, and due to its size, is able to support one of the largest populations in Africa. Hippopotamuses and Nile crocodiles are found in large groups in the Mara and Talek river. More than 470 species of birds have been identified in the park, many of which are migrants, with almost 60 species being raptors. Birds that call this area home for at least part of the year include: vultures, marabou storks, secretary birds, hornbills, crowned cranes, ostriches, long-crested eagles, African pygmy-falcons and the lilac-breasted roller, which is the national bird of Kenya