I haven’t seen one of these since June. Sometimes they show up in mixed company together with Western Grebes. Those two can be hard to tell apart, and for decades were believed to be the same species. In fact they rarely interbreed and scientists say their DNAs differ in substantial ways.
This one cruised the waters of the North Basin by itself.
Just by way of reminder, in the Clark’s, the eye is clear of the black cap, and the bill is a clear yellow. In the Western, the black cap wanders over the eye and the bill is a wishy-washy yellow-olive-grey.