The ornithopter is a machine built to travel by the flapping of its wings in imitation of birds.In 1485, Leonardo da Vinci begun to study the journey of birds. He grasped that humans are way too heavy, and never strong sufficient, to travel utilizing wings just attached to the hands. Consequently he sketched a tool where the aviator lies down on a plank and works two large, membranous wings making use of hand levers, foot pedals, and a system of pulleys.