My only comment is that it would have been nice to have the bird a little more centered, or something along the RB area; a twig, branch or other BG item, it just seems too open to me. Maybe a vertical would have worked better for me. However, I like the image and as they say ... :)
Nice pose, Gus. BG is just lovely as usual. :) It looks like a little blue may be bleeding into the bird's head. I don't really mind the comp since the bird is looking to the right, but I think a vertical might look even better.
I like the image of the bird, pose, and detail. I agree with Mark about perhaps cropping to more of a vertical. You might also try slanting the perch so it creates a diagonal line.