Bird is sharp with an interesting pose. I would clean up the background a bit -- especially the leaves at the edge of the left side. The perch is interesting but the picture may be stronger if you were to clone about 50% off the bottom of the perch.
Neat bird, looks rather unhappy! Nice BG, and the perch has nice curves and textures. Although I don't mind the comp I do agree with Scott about the leaves at left. About the white spots: I would eliminate them because of the fact we likely need your explanation of what they are. You could keep them if the photo was of the bird actually preening.
Like the BG here, and love this image for the simple fact, that you've got it on a lovely perch(which in our area is very rare). The sharpness on the bird is good. Overall a lovely image.