An ornithopter (from Greek ornithos "bird", pteron "wing" and prop "circle" ) is a woman who flies by using circular wings. These creature occurs not only in women, men have been sighted as well ! But they tend to use aluminum as preferable material. Humans seek to imitate the flapping-wing flight of birds, insects and bats. Though machines may differ in form and they use static propellers, they are usually built on the same scale as these flying creatures.
Manned ornithopters have also been built, and some successful flights have been reported. Perhaps because the prevailing culture favors fixed wing aircraft, people are mainly aware of the failed attempts at flapping-wing flight. This research describes only the successful attempts. The machines are of two general types: those with engines, and those powered by the muscles of the body.