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OCT 08, 2013 - Discover

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This Bird Can Fly for Six Months Without Landing Once

Alpine swifts weigh just under a quarter-pound, glide along on a nearly 22-inch wingspan---and, it turns out, sleep while airborne. For the first time, researchers have documented that the birds can stay aloft for more than six months at a crack. Swiss researchers tagged six Alpine swifts with light-sensitive and movement data monitors, starting from their breeding grounds in Switzerland. The birds spent the next year flying south, hanging out in western Africa and heading back north, with

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