Looks great, I personally love these over the shoulder glances. I would clone out the small bit of wood sticking into the frame at right, and crop below to eliminate the blue sky showing under the perch. Selective sharpening of the eye would be good too.
Nice pose captured. I agree on the piece of wood at the right side. The light looks a bit harsh, a lower angle would have helped and you might sharpen the head a bit more.