I was going to say this was beautiful, but I have the real thing perched on my wrist right now and can't think anything would compare - plus, with this version I can bury my nose in a fluffy tummy. Mwa!
It's lovely, though. If you're wanting to go all hardcore on it, I'd redo the eyes - they don't do justice to the lovely feathers you've got there. I guess the only other thing that comes to mind is that they have finer/tinier feathers in the area from nose to beak in most birds I see... as thick as they are in your picture, they make me think of, maybe, sheep? Wool, somehow.
That said, there's no reason why you couldn't have a complete fantasy creature built as you're doing, and as game art I wouldn't pick at it at at all (except maybe more detail on the eye).

Edit: Ha, nose to beak. I meant between the eyes and beak. For some reason I've always imagined an invisible nose between the eyes and nostril.
