Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Why do flocks of birds swoop and swirl together ...

Humans have a complicated relationship with the night. We schedule most of our important tasks in the daylight hours, reserving the darkness for rest, relaxation, and, on clear nights, wonder. For ...

The dark, smudgy streaks on Xavi Bou's photographs suggest the jerky ink tracks created by a malfunctioning printer, but they actually record the various patterns birds trace while flying in flocks.

Birds possess an incredible ability to sleep while flying. This allows them to undertake epic migrations spanning continents ...

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 ...