Only 10 km from the bustle of the city, Nairobi national park, covering an area of close to 100 sq km is an ecosystem of grassland, forests and rivers. It is home to all the Big Five except Elephants which had to re-locate to larger reserves with enough food for them. Plains game found here include Giraffe, Gazelle, Zebra, Impala and the Heartbeest. It is also possible to observe Cheetah, Jackal, Hyena and Serval cats while birds such as the Masai Ostrich, Hadada Ibis, Sacred Ibis, Kingfishers and lilac breasted Rollers among many other species, are resident here. The rivers are home to crocodiles and turtles are a usual citing.