Looks amazing without the outline, much more realistic :D Don\'t forget to give the gryph nostrils though! In most birds it\'s on the cere, the tissue above the beak. Also, I\'d suggest darkening the shadows of the beak itself more. Right now it\'s too purely orange - maybe put in some browns, to tie it in with the feathers. And darken the pupil too, unless you\'re aiming for that shadowy-misty-eye look :)
Have to say though, you\'ve done an incredible work with the feathers themselves.