Quite excellent. I love your ISO choice to prevent any motion blur on the wings. I love everything about this one: EXP, orientation of the bird to the plane of the sensor, the head angle. the nice blue water, and the concentric rings. I wish only for a better view of the near underwing (where the primaries are slightly shaded).
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I'm with KD for more room above (and perhaps a bit less below), but all else looks great. I like the timing of the peak of the back swing of the wing flap. WTG!!