Songbirds possess a musical instrument more complex than anything found in an orchestra, a study has confirmed. Known as the syrinx, it is the bird's version of the voice box or larynx in humans.

Ever heard or heard of a salpinx, barbiton, aulos, or syrinx? Well, neither has anyone else, for centuries (at least heard them). Until now. Credit: Luca Petrella These ancient instruments were common ...