Shutter speed appears to be critical for this photo as too fast would render the water not as attractive as the smooth flow of this photo and too slow would render the bird not as sharp as you've captured. My only gripe would be more light to have fallen on the bird's body. Good job.
Right then, joke's on me as I now have to plough through 564 images and bump them all (yes, all of them) up. There'll be a third run through for fine tuning. It's day two three now and I'm running late, sorry.
Just another boid, but hey - all the technicals are bang on, making an impact out of the picture (that's my explanation, anyway). Top drawer. 8