Snowball the dancing parrot doesn’t just bob his head when he hears music. He headbangs. He headbangs with a lifted foot. He vogues. You may already be familiar with Snowball, the sulphur ...

(CNN) -- A head-banging parrot who became a YouTube sensation has demonstrated that an ability to appreciate music and keep a rhythm is not unique to humans, scientists say. Snowball the cockatoo ...

Two famous parrots and a bevy of YouTube videos have now convinced scientists that people aren't the only ones who can groove to a musical beat. Dancing has long been thought to be uniquely human.

(CNN) -- A head-banging parrot who became a YouTube sensation has demonstrated that an ability to appreciate music and keep a rhythm is not unique to humans, scientists say. Snowball the cockatoo ...