Penguin flight: Why the sea-faring birds lost their ability to fly.

Why Penguins Lost Their Ability to Fly (VIDEO)

Why Penguins Lost Their Ability to Fly (VIDEO)

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May 21 2013 3:34 PM

Why Penguins Lost Their Ability to Fly (VIDEO)

The findings challenged the widely held theory that penguins lost their flying chops because of a lack of land predators they needed to escape.