I had a little bit of fun with the Common Goldeneyes as they were cooperating more than usual (only the females - the males stayed far). On a couple of occasions they started their running starts when they were right ion front of me, providing some excellent opportunities. Here's one of my favorites from the session due to the "spinning" feet action!
Canon 7DII + 500mm f/4 II + 1.4TC III, manual exposure, evaluative metering, 1/2500s., f/5.6, ISO 1600, natural light, handheld, cropped for comp (no room in front - I do wish I had a tad more there).