Bufflehead

Steve Forman photographed these buffleheads on Bartlett Pond in Northborough.

A bufflehead at the Sudbury Reservoir in Southborough, photographed by Steve Forman.

Steve Forman photographed a mute swan, northern pintails, and buffleheads at Hager Pond in Marlborough.

Steve Forman photographed hooded mergansers, tree swallows, buffleheads, and ring-necked ducks at MacCallum Wildlife Management Area in Northborough.

Steve Forman photographed a bald eagle, a bufflehead, and a common merganser at the Sudbury Reservoir in Southborough.

Steve Forman photographed a bufflehead and a common merganser at the Sudbury Reservoir in Southborough.

Steve Forman photographed a bufflehead and a pair of common mergansers on the Sudbury Reservoir in Southborough.