Abundance of wildlife in East Africa's Rift Valley, an assemblage of great white pelicans, waterbuck, lesser flamingos, and greater flamingos. Pelicanus onocrotalus, Kobus ellipsiprymnus, Phoenicopterus minor, Phoenicopterus ruber. Nakuru Town in the background. Pollution from urbanization and land cultivation threaten the future of the lake's bird life. Lake Nakuru National Park, Great Rift Valley, Kenya, East Africa.