Hi Chris, good flying posture, and interesting colour on the head, neck and legs. I havent seen them having brown before. Even the Juvvies are black, but have a shorter bill.
Here is what I like:
1) The pose is very nice. The full up- stroke wing position displays the underside of the wing very nicely.
2) The background is pleasing. I like the mixture of brown and hints of green.
3) Good light!
4) Sharp and well exposed.
Other comments/suggestions:
1) I think this would be stronger if you had captured the image with the bird flying more towards you or at least parallel. However, I would be happy if this were mine.
2) I agree with Colin on the highlights. If within your ethics, I would try toning those down or possibly removing and to see how that effected the presentation.
Overall I think this is a pleasing image. Thanks much for sharing.
Angle could be better, but the exposure, details and clean BG are very good. Not troubled with specular highlights - on my monitor, they just look wet. Well handled.