Head-banging parrot proves birds can dance * Story Highlights * Scientists: Dancing parrots prove ability to recognize music not unique to humans * YouTube hit Snowball the cockatoo dances to Back Street Boys, Queen * Ability to keep time apparently linked to vocal mimicry, scientists believe * Other animals capable of mimicry include dolphins, elephants, seals, walruses updated 46 minutes ago http://www.cnn.com/2009/TECH/science/05/01/dancing.parrots/index.html In a study lead by Adena Schachner of Harvard University, researchers examined more than 1,000 YouTube videos of dancing animals and found 14 types of parrot species and one elephant genuinely capable of keeping time.