I love the shot - but if I were to be nit-picky - I would have to tell you that the rock in the background is really distracting my eye. Beautiful colors/clarity though! :)
Beautiful pic, but you are loosing a lot of detail because it was underexposed for the bird. I think the light background threw off the exposure meeter for your subject. A spot exposure might be better next time.
These are so difficult to capture aren't they. The shaow causes a problem doesn't it. I can only think of fill flash or more stalking could balance the subject witht eh background better