They sleep in the sky.
They eat in the sky.
They mate in the sky.
And even when they drink—
they don’t stop to land.

The common swift is one of the most extraordinary aviators on Earth, a bird so committed to the air that it spends up to 10 months a year without touching the ground—longer than any other species known.

With wings shaped like curved scythes and a body built for speed, the swift is designed for endurance. It can skim over lakes and rivers in a split-second, scooping droplets of water in flight before vanishing back into the sky as if it were never there.

Scientists have discovered that swifts can even sleep while flying. By shutting down one half of their brain at a time, they glide through the night with effortless precision. Day after day, week after week, the sky remains their only home.

Landing is rare—and dangerous. Aside from nesting, when a swift touches the earth, it often means trouble. Their legs are too short to walk, and taking off again can be a struggle. For these birds, the ground is not comfort but risk.

The common swift treats the Earth itself as optional. To witness one streaking across the sky is to see a creature evolved not for land, but for eternal flight.