Researchers have tracked muscle contractions in a bird's vocal tract, and reconstructed the song it was silently singing in its sleep. The resulting audio is a very specific call, allowing the team to ...

Scientists brought to life the silent, sleeping songs of two great kiskadees. Andrej Chudý via Flickr under CC BY-NC-SA 2.0 DEED While birds are fast asleep, their brains remain active, firing off ...

Ambience (sic) is a popular sleep sound app for Android. It features a clean, simple UI along with a variety of calming sounds. They include things like rain, waves, crickets, and even some music. It ...

In the darkening hours before dawn, when much of the world lies still, birds stir—twitching, shifting, flapping. Their sleep is not like ours. It is featherlight, held between awareness and slumber, ...