Meet the Rüppell's griffon vulture, the world's highest-flying bird. Discover why this 8-foot wingspan giant is critically endangered and how to see them in the Serengeti.
Meet the bird that can fly at 36,000 feet! From its 'gut-of-iron' to its unique oxygen-moving blood, discover the incredible Rüppell's griffon vulture and the German explorer who gave it its name.