I like the overall composition but the bird seems to be a bit tight in the frame. i like the background, the reflection in the water and the eye contact. Regarding the processing I would suggest to rework the levels in the bird only because it seems a litle bit dark in my opinion and to reduce the blues in the bird. Something like this (if you need help with the process just let me know) :-)
Thanks Juan.
I agree on the blue cast.
Not sure about the sharpening. Thanks for taking the time to repost showing me your idea. However your sharpening around the head and neck look too sharp to me.
Obviously this was taken just before sunset and the whites around the head and neck just don't look that way this late in the day.