The world's greatest endurance athletes, shorebirds, travel thousands of miles each year along ancient migratory routes, flying non-stop for up to nine days without food or water to reach breeding grounds in Arctic regions.
Flyways: the untold journey of migratory shorebirds
A flock of remarkable shorebirds embark on a grueling 9-day non-stop flight, pushing their endurance to the limits as they migrate to their destination.