Kenya 200,000 zebras participate in the migration across the Mara River. The "Big Five" game animals of Africa, that is the lion, leopard, buffalo, rhinoceros, and elephant, can be found in Kenya and in the Masai Mara in particular. A significant population of other wild animals, reptiles and birds can be found in the national parks and game reserves in the country. The annual animal migration occurs between June and September with millions of animals taking part, attracting valuable foreign tourism. Two million wildebeest migrate a distance of from the Serengeti in neighbouring Tanzania to the Masai Mara in Kenya, in
Serengeti National Park to describe the area, "siringet", which means "the place where the land runs on forever". The first American to enter the Serengeti, Stewart Edward White, recorded his explorations in the northern Serengeti in 1913. He returned to the Serengeti in the 1920s and camped in the area around Seronera for three months. During this time, he and his companions shot 50 lions. Because the hunting of lions made them scarce, the British colonial administration made a partial game reserve of in the area in 1921 and a full one in 1929. These actions were the basis for Serengeti National Park,