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

Swifts practically live in the sky. These birds skip land for nearly a year, doing everything midair, from eating to sleeping. They travel thousands of miles without ever stopping to perch. Scientists ...

This article originally appeared on The Conversation. Aside from being a delight to watch, flight in birds is regarded by many cultures as a symbol of freedom, and a source of inspiration for humans ...