Very interesting and very cute. I've never seen anything like this. I agree with Alfred that tighter framing using a longer lens would have been ideal. You don't have to show the whole parent to keep the viewers interest....My eyes are drawn to the little one, sitting on top of the head....so if you'd be able to frame just the parents head, the eye and perhaps some teeth...together with the little fellow you'd have a winner.
Nice image as is Gary, but I do agree that a close up of the small one with the eye of the mother under it could have been an amazing image, did you get an image like that?