Hi Colin - Good use of dof to have both birds sharp. I'm ok with the highlights and contrast because the birds are nicely separated from the bg. I think you could go with more of a pano crop taking some off the top.
Colin when I tried to photograph birds over in your country I struggled like mad with all that bright light and found it almost impossible to get a catch lite in the eye,so looking at this image I would say you have done very well getting this as good as it is .The fact that you also got both birds in focus is a real bonus.