Black Tailed Godwit

While in in TAv mode accidentally moving from my chosen f8 to f11 meant the ISO automatically whacked up to 10,000 and still the K5lls produced a pretty good image albeit a little (Noise reduction and sharpening in PSE Elements Raw editor) plus massive cropping. Maybe the Sigma 150-500 is best at F11 as long as you don't mind high ISO or the background being in focus.