is he a clearflight pied? it looks like he is, but i'm not sure about the color patterns though, because he has his 'clear' color (yellow) on the back of his head, his tail feathers, and his flight feathers...
beaky! the rambunctious quaker
lucy- yellow recessive pied girly!
beenie- blue buddy
ringo- my late dominant pied
george- green little spaz!
cooper- my old cockatiel, with his real owners now.