Hi Pierre. Nice little guy! I must alert you to what looks like some major clone track to the left of the bird foot on the perch however! You might want to revisit this area and clean them up. I like the BG!
The BG and sharpness is really good but the perch is a bit tight at the bottom. You can try to add more room to fix it in the case this is a crop. I would clone out the croped, small, secondary branch under the main one at the bottom of the frame. As Dan pointed out, there are very clear evidences of cloning job in the perch that you should remove. The eye looks really good but a bit dark to my taste, try to do a selective levels adjustment on it. :-)
Agree with suggestions !!! Do like the image You made a good exposure, sharp and excellent pose with good detail in both shadow and highlight areas !!!