I will second Matt's opinion of American Wigeon x Mallard.
I will also point out that a great option for perusing photos of hybrid
ducks or other hybrids too, is ebird's relatively new photo gallery tool:
https://ebird.org/media/catalog
Using that tool, you can see what other people have posted
There's no doubt in my mind that this is an American wigeon hybrid...The
gray/pale blue bill and green mask that a drake baldpate exhibits are palpable;
what it's crossed with is more conjecture for me but I believe that it is
crossed with a mallard. Perhaps the juxtaposed true mallard present i
Hey, everybody.
This evening, Sat., Jan. 14, in fading light at Stearns Lake, southeastern
Boulder County, Andrew Floyd and I saw a hybrid duck that I'm not certain
about. In terms of gross plumage characters, it reminds me of a "Brewer's,"
or "Bemaculated," Duck, i.e., a Mallard x Gadwall hybr
