At various times throughout the winter, I can see rafts of migratory ducks in the waters off of Occoquan Bay National Wildlife Refuge. Most of the time there are Buffleheads, Ruddy Ducks, and Hooded Mergansers, but sometimes these familiar friends are joined by members of other species.
Last week I spotted some Scaups, medium-sized diving ducks that tend to hang out in the deeper waters far from the shore. There are two different kinds of Scaups—Greater and Lesser—that are almost identical in appearance and I honestly have trouble telling them apart. According to the Cornell Lab of Ornithology, there are “only slight differences in head shape: the Greater Scaup has a rounded head, the Lesser Scaup a peaked head.”
One of the female scaups ventured within range of my telephoto lens and I was able to capture this image. To me, her head looks rounded, so I am guessing that she is a Female Greater Scaup (Aythya marila). I love her distinctive white patches near her bill and her stunning yellow eyes.
© Michael Q. Powell. All rights reserved.










