What kind of bird?

[jlcarnagey]

This little guy was jumping around these rocks in Yellowstone. Can you help with identity? Thanks.

[Ephily]

This is a Rock Wren.

[jlcarnagey]

Thanks. I thought it was a wren, but not sure. I called it a mexican jumping bird. It wouldn't stay still for anything.

[canonloader]

Neat bird. Never seen one. :)