Wing position, sharpness, light and BG look good. Did he look at another bird? There seem to be wingtips in the lower right. I might give it a bit more room.
Very nice shot, I agree with a little more room if available on the top and left. Also clone out the branches in the lower right to remove the distraction.
Fantastic flight shot of this species. It is one of my favorite birds.
I just got back from France from a conference about Bonelli's Eagle. It is one of the most endangered raptors in Europe.
Terrific wing position and nice light. Love the outstretched talons. I'd like a bit more eye contact. And I agree about removing the branches at the bottom and giving the bird a little more room.