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[–] ElectroGypsy 0 points 5 points (+5|-0) ago 

Was curious so I googled it, apparently they normally stand on one leg to help regulate body temperature. It's called unipedal resting.

[–] [deleted] 0 points 2 points (+2|-0) ago 

[Deleted]

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[–] ElectroGypsy 0 points 4 points (+4|-0) ago  (edited ago)

Limits the amount of unfeathered surface exposed to the cold air and ground. I think it's like how we pull our hands into our jacket sleeves on cold windy days.

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[–] OcculusResurrectio 0 points 1 point (+1|-0) ago 

Don't google it. Try it out for yourself