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This is Scientific American 60-second science. I'm Julia Rosen. Got a minute? Great frigate birds are

extraordinary creatures. They're seabirds with six foot wingspans, yet they only weigh about three pounds.

Their preferred food, flying fish, which they pluck out of the air above the water's surface. Frigate

birds' feathers aren't waterproof, so landing on the water to fish is a no-go.

Now scientists have discovered that great frigate birds do something else amazing.

They can fly for up to two months at a time without landing.

Researchers already knew that these birds took extended trips over the Indian and Pacific oceans to feed.

But in a new study,

scientists used tracking devices to follow the movement and vital signs of birds from the

island of Europa near Madagascar. They discovered that the birds have a highly specialized

strategy for staying aloft. When they are traveling most of their time, they flap very

unfrequently their wings. Henri Weimer's

Scurge, an ecologist at the National Center for Scientific Research in France. In fact, what they are doing,

they are doing a sort of a roller coaster flight, so they take altitude, even they can climb up to

three or four thousand meters, and when they climb, they do not

flap the wing at all.

Weimer's Kirch and his colleagues found that the birds climb currents of rising air

...