Took this early last winter while at my local wildlife refuge. A few friends and I were set up in the morning by a pond that harriers frequently fly by. I saw a diving duck paddling across the water headed our way. I locked on early and yelled to my buddies as I was panning. By the time they had realized what I was saying, the Drake Ruddy was even with us and my MKIV was hammering away at 10fps.
Needles to say my buddies all got butt shots and I cant repeat the names they called me after I showed them this frame in the cameras LCD I hardly ever see Rudy Ducks in the air so I was very happy to have this shot in my files.
I really like the sideways body position showing off those over sized diving feet. In breeding season the feet and bill are blue on this species.