When birds sit quietly on a branch for long periods during winter, they are not usually sleeping but conserving energy, ...

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 ...

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 ...

Sleep looks peaceful on the outside, but inside the brain, it is anything but ...

Long flights often feel tiring for many travellers, yet nature shows a very different story. Several birds stay airborne for weeks or even months, resting in mid-air during long migrations. Their ...

This study was supported by a student grant from the Australasian Society for the Study of Animal Behaviour and a doctoral scholarship from the University of Auckland. Kristal Cain does not work for, ...

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 ...