The syrinx of a bird has two sound-producing parts, unlike the larynx of humans, so they can sing two sounds at the same time. Bobolinks take advantage of this. Most notes also cover a frequency range ...

The bobolink has one of the most complex and beautiful songs in the world. But I’m still puzzled that Bryant, or someone before him, thought it was singing, “bob-o-link!” People have put words to bird ...