Comment on Aesop Was Right: Birds Use Rocks to Raise Water LevelComments−branden17ySimilar: http://www.youtube.com/watch?v=TtmLVP0HvDg&feature=relat...A crow, given food in a thin cylinder and a piece of wire, bends the wire into a hook and pulls the food out.
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Similar: http://www.youtube.com/watch?v=TtmLVP0HvDg&feature=relat...
A crow, given food in a thin cylinder and a piece of wire, bends the wire into a hook and pulls the food out.