I like the walking pose, sharpness and the fresh juvenile plumage. I'm not entirely sure, the whites look good but the sand seems to have a slight magenta cast. Did you load the latest firmware?
Nice angle. I like the hint of water you left in the BG. I also like the striding pose of the bird, and the slightly turned away head angle seems to fit a walk on the beach as I'd expect him to be looking that way in a search some food.