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Why did penguins stop flying?
short by Sanira Mediratta / on Wednesday, 8 March, 2017
According to a study, penguins evolved as flightless birds when their wings became more efficient for swimming and eventually lost their ability to lift penguins off the ground. The penguins' bones also thickened over time, making them more suitable for swimming. Another theory suggests that the species became flightless due to a lack of predators on ground.
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