Very appealing, and the head looks velvety smooth! Great low angle and gorgeous BG / FG colours. The bright elongated eye reflection competes for attention a bit though IMO. Perhaps reducing its impact would be good?
Glenn - not just a beautiful photograph but a real work of art. I love the surreal feel to it. Great detail, framing and lighting. I agree with Daniel about the eye reflection.
You have captured the subtle colors on the head well, with soft background, nice head angle, very nice overall. Yes, I would clean up the elongated catchlight reflection also.
I am seeing some jaggies along the profile of the head from sharpening, at least on my monitor.
How can you sit on such a photo for several months without processing it? The simple setting really brings out the beauty in the bird. Can't stop staring at it.