Great looking bird, great job on the blacks, although the white spot on the neck looks a little hot. I'd be tempted to add a little canvas on the right and remove the two small branches just to see how it would look. All in all an image I enjoy seeing, thanks.
I would agree that a bit added to the right would suit, and the little branch on the bottom could go.
Nice and detailed. I do like the colours of this bird. Sometimes rather plain colours are just as nice as very colourfull ones. The whites look ok on my monitor.
Perch issues having already been discussed, you've done a great job capturing your subject! Plenty of detail, excellent sharpness, and a perfect head angle.