In northern Argentina, one bird courts romance by snapping its wrists together, producing a sound scientists have puzzled ...

Birds make sounds to communicate, whether to find a potential mate, ward off predators, or just sing for pleasure. But the conditions that contribute to the immense diversity of the sounds they make ...

Add Yahoo as a preferred source to see more of our stories on Google. The team found that habitat appears to influence the frequency of the sound the bird makes in some unexpected ways. In ecosystems ...