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.

Red backed shrikes migrate using a fixed schedule, flying in stages with little variation, showing that genetics guide bird ...

Research on the Anchiornis specimen reveals hidden feather structures that contradict old theories on dinosaur flight.

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

Some birds stay aloft for astonishing lengths of time, using clever sleep habits to survive long flights. These remarkable species show how migration can push creatures to extraordinary limits.

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Most bird species don’t fly above a few thousand feet in ...