This almost looks unreal.... If it is in the UK then it would be a Common Buzzard. The colours do not look real to me for that particular bird. Its almost half way between a Red Tailed Hawk and a common Buzzard.
Looks like a police mugshot. I would've cropped out the shackles and the top bar to give it less of a "captivity" feel - not much you can do about the background though. Colors and focus are good though - overall a good job!
This is not a very interesting composition. The background is very dull to look at, too. Maybe a shot of him with his "handler" would be more interesting. Just a thought.
Must be the UK..? Pretty bird. Think a tighter crop at the bottom would of been good. The buttons are distracting a bit. The top also could stand a trim. Your shot over all is very nice just needs crop work. Good entry.