Birds are aflutter with activity all day long so they certainly need to rest at night – but where do they go? Other than owls ...

Some animals can sleep with just half their brain at a time. Understanding this phenomenon can help us learn more about human ...

A few weeks ago when I was out cycling with some friends, we saw a few birds who looked like they were sleeping. Someone asked me what they were doing, and I said they were resting or sleeping but I'd ...

Animals have evolved to sleep in extreme ways — for example, taking micro naps during parenting, sleeping on the wing during ...

Birds possess an incredible ability to sleep while flying. This allows them to undertake epic migrations spanning continents and oceans. They achieve this through unihemispheric sleep, where one brain ...

Frigatebirds snooze in flight while penguins take four-second catnaps Emperor penguin chicks stand together in Antarctica. Penguin parents take thousands of catnaps a day while looking after their ...

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 ...