Buffleheads are very small ducks, about half the size of Mallards. I have found them to be difficult to photograph because of their size and colors. Females are gray brown with white patches on their cheeks. Males are white and black. In both sexes, the eyes are hard to distinguish from the dark areas surrounding them, unless there is good light, which is not always the case in winter.
A few days ago, I went to the refuge on a cold and windy day. The marshes were mostly frozen and there were only several gulls and Buffleheads. There were also very few cars, and so I was able to zoom in closer on some female Buffleheads who were actively diving for food.
There was no male Bufflehead at EBF on that day. The following photo shows one taken a few days earlier near Barnegat Lighthouse.
Here’s how the refuge looked on a cold day, when the highest temperature was well below freezing.