The whites on the head appear just a little hot (no photoshop check sorry, just visual), and the LLC is a little distracting with the OOF grasses. The motion blur is not ideal and I think you could have cranked the ISO up at least to 1600 to get more SS. I bet it was a tough situation and you did the best you could and I like the take off pose. :)
I agree with others comments but this is a real nice capture. Additionally the reflections in the water are a bit distracting and I am seeing some noise in the BG.