As I already replied, no one at all to date has rigged wings as accurately as EtuJedi's. He spent months reverse engineering real bird's wings, and building in rigging and ERC so hsi wings could move exactly like a real bird's do. That's why they can accutately fld, and others cannot.

Some wings have a toal of 3 bones. I think EtuJedi's have like 20 for each wing. (Maybe more.. I never counted them.) And when the wing in manipulated, all the feathers manipulate just like in real life.

Way too many people take way too many things way too seriously.