+ - Why Penguins Don't Fly-> 1
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sciencehabit
sciencehabit writes "A new study of murres, penguinlike seabirds that retain the ability to take wing, reveals why penguins don't fly. Scientists have found that it's costly and inefficient to be both a diver and a flyer. If the murre's all-purpose wing became more like a penguin's stubby flipper, swimming would be easier, because a short wing creates less drag in the water. But flying would be nearly impossible, because a short wing makes it harder to stay aloft."
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