Buffleheads are one of my all-time favorite ducks. It was one of the first ducks (besides Mallards) that I learned to identify. They are a North American bird. They breed in Canada and Alaska and winter mostly in the U.S.

The males are easily recognizable with the greenish-black heads with the white cap. The females have a white patch behind the eye and a brown head. Buffleheads are divers and will forage underwater. They eat insects, crustaceans, plants, and fish eggs. Buffleheads winter in the S.F. Bay Area.