with a Northern Pintail behind it
with White-faced Ibis
I don't if these Mallards are domesticated or the hybrid.
Colusa National Wildlife Refuge, Colusa CA.
wintered in this location for two years
Overwintering bird at Colusa NWR. Note the sickle-shaped tertials. Unfortunately, the bright green head was down when I took this shot. eBird checklist: http://ebird.org/ebird/view/checklist?subID=S9708741