The reactor was not intended for flight and named after the flightless bird. The ostrich is a flightless bird native to Africa. The emu is a large, flightless bird. She is accompanied a large flightless bird named Kokopo. The Inaccessible Island rail, the world's smallest living flightless bird, is endemic to Inaccessible Island. The bird with the highest density of trabeculae is the kiwi, a flightless bird. The Inaccessible Island rail is the smallest living flightless bird in the world, measuring . A penguin is a flightless bird from the Southern Hemisphere. She is usually accompanied by her closest friend, , an ostrich-sized duck-like flightless bird. Genyornis newtoni was a large, flightless bird that lived in Australia. The Tasmanian native hen is a stocky flightless bird between in length. The dodo, a flightless bird from Mauritius, is another well-known example of overexploitation. He is a large, furry, green bipedal flightless bird with an extendable tongue.