I would probably crop a little from the bottom or clone the branch textures into the LLC. OTherwise a fine example Rob. Lovely framing, good light and terrific BG. A nice Aussie! :)
I agree on the crop suggestion as well, prefer that to the clone job as the branch is already fairly "heavy", weighting the lower portion of the frame. A slightly more front lit sun angle or a splash of fill flash might be prefered but I like the depth in this one as presented too. The bird and BG look great!
Sharpness, eye contact and BG look very good. It's great to see this species in its environment and not in a pet store for a change. :) I agree regarding a slight crop off the bottom and am wondering if the use of fill flash would have disturbed the bird and nesting activity.