Frigatebirds are seabirds, but one thing you’ll never see is a frigatebird floating on the ocean. Why not? Because their feathers, unlike those of nearly all other seabirds, are not waterproof. Instead, frigatebirds are masters of staying aloft. They soar above the ocean, riding a complex roller coaster of air. Intentionally flying into a cumulus cloud, which has a powerful updraft, they may rise as high as 2.5 miles into the frigid atmosphere. From this high point, frigatebirds — such as these Great Frigatebirds — can glide more than 35 miles without flapping their wings. Which is how these seabirds survive over the open ocean.

More info and transcript at BirdNote.org. 

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