The focus and composition of his shot are excellent. The leaf coming in from the top right really brings the subject into clear view. You also focused perfectly. Which is hard for such a skittery creature. The colors are great.
I'm not sure if supersaturating would have made it better or worse, but I think it would look cool with just a bit more color depth. It could also benefit from just a bit more sharpness. That may have made it pop more and since you took it in raw it would probably handle that manipulation well.
As far as the shot itself goes, perfection!