Here's one of my most recent photos from a couple weeks ago - a male Eurasian Wigeon riding on the waves of Puget Sound!
Nice photos! Yes that green patch behind the eye is seen in a few males, especially in direct sunlight. To make things a little more confusing, they regularly interbreed with American Wigeon and usually have more extensive green patches / stripes behind the eyes. Ducks can be confusing sometimes!
I suppose a duck is a duck when it comes to romance
thanks.
jim