I'm going to point out the first thing that came to mind when I viewed this image...the crop is a bit tight (tail cut off) (if this is full framed then congratulations for getting so close and ignore the crop comment), the whites are a bit hot on the chest, the BG is busy and it looks like it could use another round of sharpening.
That being said....congratulations for finding such a cooperative/beautiful subject. Red-tailed Hawks are my favorite bird of prey and I don't care what anyone says about one of my images of one..I will never pass up on a photo opportunity no matter the circumstances.
I absolutely love the head turn it offered you in this photo. ;)
it is a full frame...and i was that close..it always just makes me giggle when he lets me get this close..i take a lot of pictures of the redtails...there are so many here but this one is special! and i never pass up a hawk either...thank you so much for the comment...i appreciate it very much!