Well first of all, I do not think that I am qualified to critique anything of this caliber. Although I do some digital work my self, none of it compares to this. What I love about this is the way you captured the luminescence of the feathers. It looks absolutely natural. The other thing is the way you have suggested movement in the bird.I have seen many times the way birds will take a dirt bath. In a similar way, it looks to me like he may have taken a shower and he is shaking off the droplets which are picking up the color of the feathers. An exquisite piece of artwork and a delight to the eyes.
I really enjoyed looking over this work. The bird is eye-catchingly bright in contrast to the background and the branch. The title really fits it well with the use of light and the saturation of colour is just where it is needed. The bird feels soft like the glow of a fire or a light bulb. In addition, the linework is impressive: clean and crisp to highlight all of the internal details. The use of space is also great. It is not cluttered, but it is also filled out modestly.
The only concern I have goes back to the lighting. The bird is a source of light in the work but I do not feel as though the lights and shadows on the branch on flowers particularly reflect it as so.
Nevertheless, I congratulate you on a job well done. It is indeed well-worth the effort endured.