Beautiful set of pix! Thanks for sharing them. I've seen them many times, but never took a good pic.
Did you get to hear the duck 'whistle'? They have an unusual sound---can be quite startling if you aren't expecting it and quite loud if they're agitated.
8 days camping in Western Colorado and 5 new birds: Juniper Titmouse, Mountain Bluebird, Black-billed Magpie, Clark's Nutcracker, Gray Jay. Beautiful!!!