From a couple of weeks back when a remarkably tolerant pair of Common Goldeneyes patrolled close to the shoreline along the edge of ice (which is just out of the frame below and right). The water is fast-running at this spot and does not fully freeze over even during the coldest temperatures we get, but the amount of open water is greatly reduced thus forcing some normally skittish species closer.
Canon 7D + 500mm f/4 II, manual exposure, evaluative metering, 1/2500s., f/8, ISO 400, natural light, handheld while lying flat on the ice, small crop for comp but basically FF.