I would crop out the entire reflection here and give vthe image a pano format. Love light, pose, exposure, detail and that bubble is a nice touch. I would also suggest to remove the catchlight on the bill's tip. Congratulations!
Ditto all the good things others said above. Considering the subtle morning light, the bird seems a bit hot across the midsection and behind the bill. I would generate a second raw exposure and tone those areas down consistent with the light. Nice work, as usual! ;)
I agree with all of the comments with the exception of one.
Unless you lighten the background a bit, I'm not at all sure that I'd go ahead and get rid of the specular highlight on the tip of the bill.
As the background is so dark and the bill is as well, my concern would be that there would be nothing defining the bill and it would simply become lost by merging itself into the background.