This is an older shot from the Wallkill River NWR. 1D mark III, 500 f4, 2x teleconverter, iso 1250, f9, 1/2000, aperture priority. This day was overcast with just ambient light.
Super eye contact Herb. Not easy to track a BIF at 1000mm but it looks like you did a good job here. I might run a little extra sharpening on the bird.