Nairobi National Park is a unique ecosystem in Kenya. The savannah ecosystem comprise of different vegetation types. Open grass plains with scattered acacia bush are predominant. The western side has a highland dry forest and a permanent river with a riverine forest. To the south are the Athi-Kapiti Plains and Kitengela migration corridor which are important wildlife dispersal areas during the rain season. Man-made dams within the park have added a further habitat, favourable to certain species of birds and other aquatic biome.