I couldn't ID this bird (it looks very much like a Ruddy Duck in all ways but color), and so I posted it to the slocobirding group message board and Tom Edell explained that it is a melanistic Ruddy Duck. (Thanks, Tom!)
I'm mostly making this observations for the little yellow one. I've taken a zillion photos of him.
Apologies for the dust spots in the pics.
(Rubber Ducky #1)
Presenta Leucismo. Conviviendo con Pato Mexicano, P.Cucharón Norteño.
There's always a huge flock of /Anas platyrhynchos/ here. This single male individual has always stood out from the rest due to its lack of colour. It has also a yellow ring on one of its feet.
Leucistic RTHA that has been in this area for a bit.
Herido de ala. Lo mantuve tres días hasta recuperación.