I agree with Kiran re: sharpening the face a bit.
re crop - I would be tempted to add a bit top and left, remove a bit at bottom
Noise - little bit creeping into the darker areas of BG. Not a major issue, but some might be bothered.
Nice exposure, holding reds/yellow. Nice eye (better yet with sharpening!)
Lovely colours and pose on the perch. Agree with Randy on more room top and left. Sharpness is the major issue. If the original is sharp some tweaking of sharpening for web will make a huge difference.
Thanks for the comments folks...Adding canvas is an easy fix. Image looked pretty sharp on my screen so I was afraid I would over sharpen. Will take another view adding addl sharpening....
Another vote for more USM and more room left and top. Excellent techs, although one could argue that you had room to lower the ISO a bit, The perch and BG are perfect. I'm surprised no one has yet mentioned that a slightly better head angle (more towards us) would have been great :-)