Crow at play

I realize that videos of animals are a slippery slope (pun not intended at first, but I like it so it stays), but I promise no kitten videos will be appearing.

This is so fascinating -- is this bird 'playing'?  Crows are known to use tools to get food, and are some of the smartest birds.  Is it just Russian birds that sled?

Whatever the scientific story is here, the simple story makes me smile.

Found via Gizmodo.