When it comes to bird calls, every chirp, trill, and warble tells a story. From eerie screeches to melodic tunes, these distinctive sounds from nature are sure to surprise you. Explore Subscribe ...

The Yao cultural group in Mozambique instead uses a loud trill followed by a grunt to find the birds. What they found: ...

For the past month, their numbers have been building, an increasing flood of birds headed southward. Their trilling calls and often slow, circling flight paths make the sandhill cranes ...

A common species of western mountains, where the male’s diagnostic, cricketlike wing trill is a characteristic ... can be all-green); and their chip calls are slightly lower pitched.

By analysing the calls of sparrows recorded over decades, scientists confirmed a change in the birds' vocal repertoire ... a succession of jumbled whistles, and a trill near the end.