Nature never ceases to amaze us, and one of its most fascinating marvels is a bird that can literally sleep in the sky — while flying — for months at a time. This incredible avian feat belongs to the ...

Frigatebirds can remain airborne for days at a time without landing. Here’s how they rest while flying, according to biological research.

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Most birds fly at low altitudes, relatively speaking. But ...