This cool-looking bird is a female scaup—I love the white stripe on her face and her striking eyes. If I were a bit better at bird identification, I might be able to figure out is she is a Greater Scaup (Aythya marila) or a Lesser Scaup (Aythya affinis). The differences between the two species are pretty subtle, especially when it comes to females, so I will generally identify them simply as “scaups.”
Throughout this month, I have seen quite a few scaups in flocks in the deep waters off of Occoquan Bay National Wildlife Refuge. Scaups are diving ducks and therefore rarely seem to come as close to the shore as dabbling ducks like mallards and pintails. It is therefore quite a challenge to get a detailed shot of a scaup.
On the day when I took this photo, the wind was kicking up and the waters were rough, which slowed down the scaup enough for me to be able to capture this image—I recommend clicking on the image to get a good look at the facial features of this distinctive duck.
© Michael Q. Powell. All rights reserved.
Mike Powell 
It looks like she’s looking back at you, Mike.
“Here’s looking at you, Kid…” Sorry, Casablanca is my favorite movie, though I admit that it is a bit of a stretch to give this female duck the voice of Humphrey Bogart. 🙂
Never having heard of a scaup, I looked up the origin of the word. The American Heritage Dictionary says the etymology is uncertain: ” Short for scaup-duck, perhaps from Scots scalp, scaup, bed of mussels (from its feeding on shellfish).”
Thanks for going the extra mile, Steve, and looking up the etymology. It has always struck me as sounding a bit weird as a word.