Nice pose and behavior photograph I would work on the eye a bit and crop slighty different so as not the place the bird in the center of the frame . Might work as a vertical crop
They have mostly left our area for the north Kinda miss them but I also welcome spring
I like the behaviour you captured here...I like the open bill, and great timing to have the head fully tilted back. I agree about the comp being too centered. Since the reflection is not strong you can crop a good portion down there (about half) and that should improve things alot comp-wise. As posted another round of sharpening in the head/face area would be good.
I think most my nits were mentioned. It does definitely need more sharpening. Not sure what workflow you have, but may I suggest that once you resize for web presentation, zoom in to 100% view and apply sharpening until you do feel it's sufficient. It makes all the difference.