Ducks on the Platte

Been hearing reports of a Long-tailed Duck down on the South Platte in Denver. Lots of ducks down there in the winter cause the river usually stays open. Went twice before I found what, at first, I thought was the Long-tailed. Now, I'm thinking it's some kind of hybrid, or a molting Pintail. Pretty duck, all the same.

Also saw some Hooded Mergansers, Common Merganser, and Buffleheads, and
Common Goldeneye, . Ducks are so beautiful. They keep birding interesting in the dead of winter.