Male Buffleheads (Bucephala albeola), a type of sea duck, often appear to be black and white, but when the light is right, you can see the glossy green and purple feathers on their heads. I spotted a distant group of Buffleheads during a recent visit to Occoquan Bay National Wildlife Refuge and captured this image that shows two male and a female (or possibly an immature male). I encourage you to click on the image to see the beautiful colors of these Buffleheads.
At this time of the year, large rafts of ducks gather on the bay, usually a long way from the shore. So far I have seen Ruddy Ducks and Scaups, in addition to the Buffleheads shown here. In past years I have also spotted several kinds of grebes and other water birds. Throughout the winter, I try to keep an eye out for these groups of birds, hoping that some of them will drift within range of my camera.
© Michael Q. Powell. All rights reserved.
Mike Powell 
One of my favorite ducks!
We only see them occasionally during migration here in central Florida. Always a treat.
Looks like some of my shots at Marine Park in November.