This is an image of a captive bird taken last Saturday at Ray Barlow's workshop.
Canon 50D
Canon 300 2.8
Aperture-priority @f/5.6 1/1,600 sec
ISO 200
Exposure Compensation -4/3
Very intense stare here. I like the strong diagonal elements, the fact that the body is banked a bit to his right, talons. From a comp. standpoint, I might try cropping in from the right, as that area doesn't add much, since his attention is clearly focused straight ahead. I don't think you have to worry about it seeming too centered. Matter of personal taste.
From a technical standpoint, there are hot spots scattered throughout the plumage, so would back off the highlight recovery slider just a bit.