Lovely image.
Great light and great head turn.
I wish you had traded shutter speed for DOF to get the branch completely in focus. The DOF on the bird is fine though so you got away with it!
if this isn't a big crop then a vertical would look excellent as well.
Gail
Yes, a vertical would be nice too, but the BG branches make this work nicely as presented. Nice look-back pose. Sharp. Some of the reds look hot and possibly clipped (especially the face)...you can try adding some cyan to the reds to see if those can be tamed while still looking natural.
Lovely over the shoulder look. I will leave the crop as it is, the BG branches are very nice and add interest to the image. In my monitor at work the reds don't look clipped. I agree a bit more DOF for the branches would had been perfect, but is not a big deal. Still a beautiful image!