The sky is one of the world's most challenging places to live, but across the planet, an extraordinary range of animals do something we can only dream of take to the air. Some spend their whole lives airborne, while others only visit. But, they all have one thing in common: they survive by taking to the skies.

Crowded Skies

Premiered July 13, 2016
Crowded Skies

The sky is a crowded world where mammals, birds and insects hunt, escape, mate, defend territory, sleep, and even die on the wing. Survival up here depends not just on beating gravity or mastering flight, but also out-flying the competition.

Here’s your ticket to stream.

Stream the best of public television on demand with GPB Passport: MASTERPIECE dramas and mysteries, NOVA, Ken Burns documentaries, Finding Your Roots and more. Binge full seasons, get early access to new episodes before they air on television and catch up on programs you missed with this powerful donor benefit from GPB!