Piero is a new Blender Cookie course, and the character's rig is now available for download.
Kent Trammell writes:
Piero is a stylized bird character who is the result of an extensive full-production training course. He's been built entirely in Blender, rigged for general-purpose animation including a flexible Spline-IK wing system, with shaders applied and ready to be rendered with Cycles. He can be downloaded for free from Blend Swap and re-used under the CC-BY license.
You can see the rig in action here:
Citizen members can watch the entire process that brought Piero to life from modeling, to texturing, to rigging, to animation, to post production at Blender Cookie.