Cuckoo clock
Like many other clocks, cuckoo clocks can work using weights, springs, or electricity. Every clock is different, both in how it looks, how it works, and what it does. The sound of the "cuckoo" usually comes from bellows in mechanical clocks, or from a speaker in electric clocks. The clock may do more than just make this sound; some clocks also have figures that move around as music is played.