If interested I have a spot in Sydney where these guys can be found. I have tried without success to photograph them at this location - A hide would be very helpful at this location. With what i have seen of your work I'm sure you would have no problems.
Great pose (albeit slightly angled away) and sharpness. I find the colors - especially of the background - too Kodak. There is also significant noise. As for the composition I think it needs more space on top and less from the bottom. The latter may also reduce the impact of the perch. JR