Hawk with hazy background
This would have been better if the background had been clear without any fog.
I have my 600 set up for hawks and used the program settings on it so I could control the ISO and the flash. Still testing to get the best pictures in all conditions. The photo above was not taken with the 600.
I get most of my bird pictures in the winter, it's a lot easier than the summer when they are raising the young.