The bird trainer or L’Oiseleur as it is known is French is a moving 4 feet doll created by Christian Bally, a French automata professional. It took over 15,000 hours to finish this project. This automated doll is given motion and life all thanks to its 2,340 steel polished parts. It does not function using any batteries or motors but with the help of spring-driven gears and cogs. The doll is dressed in renaissance garb, which is embellished with pearls and gold.