dhugger is behind various exciting kinetic sculptures. Colibri is quite special though. It is a wooden kinetic sculpture that simulates the motion of a hummingbird in flight. Every part of the motion has been mechanized. Colibri goes through its complete cycle with a simple turn of a crank.
Colibri has a network of gears, hypocycloid reducers, linkages, and other parts to deliver accurate motion. It moves its wings, tail, head, and body smoothly. It is simply a kinetic sculpture inspired by nature. You can buy the plans here.