While this beautiful bird had its eyes on dinner, I focused on getting a tight headshot with blue sky framing. The bird was in constant motion, so I aligned myself with the sun and held the single selected focus point (one to the right of top center) where I wanted the bird to be in the frame. As soon as the head turned to align with my vision for the shot, I pressed the shutter release. While my timing and/or framing was not successful on every attempt at this image, I really only needed to nail one of them. Persistence paid off.
The sky was clear (late in the day) and that meant the required exposure was not changing quickly. Stable exposure needs combined with a bright white subject shout "Manual Exposure" to me. I selected a manual exposure setting that made the brightest whites nearly blown and reduced brightness by 1/6 stop during post processing.
The sharpness of this image, captured handheld on the pixel-dense 7D Mark II with the 100-400 L II at 400mm, is really impressive. I see a lot of images, including a lot of sharp ones, but what I see here catches my attention. I highly recommend this lens (and camera), especially for birding and wildlife.