Now recognized as the loudest in the world, Amazon white bellbird calls have a sound pressure about three times that of screaming pihas, another Amazon species now demoted to the second loudest bird ...

An unprecedented study is analyzing biodiversity by listening to nearly 16,000 minutes of recordings made in Carajás National Forest, a protected region in the Brazilian Amazon. Some 230 bird species ...

One small bird produces a call so loud, it rivals a rock concert and it's officially the loudest sound in the animal kingdom. This video explores how the white bellbird stuns mates and scientists ...