Nice capture! Good wing position, light, sharpness, and BG. The whites right at the base of the wing look a little hot IMO. I would also prefer the fish not to be blocking part of the bird, but there was nothing you could do about that.
The bird is angling away from us; the first rule of flight photography is to press the shutter button when the bird is flying towards you.
Light is harsh, image contrasty. A bit tight in the frame. Frame to large and BLACK. I do like the BKGR.
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