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Photo: Sleeping ball of swan

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Our photo of the day is a lesson in limberness.

The essence of a swan is all elegance. The iconic, long-necked silhouette gliding through the water comes to mind; or maybe a stageful of ballerinas. But have you ever wondered how sans sleep? This photo by David Genney gives us a clue: All curled up in a safe and cozy ball.

Would you like to see your nature photo featured as the TreeHugger photo of the day? Join TreeHugger’s Reader Photo Pool on Flickr and add your pictures to the group. Alternatively, send it to photos@treehugger.com with "photo of the day" in the subject line.

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