Gadwall

Nancy Wright photographed an American black duck, a mallard, common mergansers, and a gadwall on Lake Chauncy in Westborough.

Steve Forman photographed a bald eagle, a gadwall, and a lesser scaup at Hager Pond in Marlborough.

Steve Forman photographed a pair of gadwalls at Hager Pond in Marlborough.

Steve Forman photographed common goldeneyes, a gadwall, mallards, and a mute swan in Marlborough.

Steve Forman photographed hooded mergansers, gadwalls, northern pintails, mallards, a ring-billed gull, and a mute swan at Hager Pond in Marlborough.

Steve Forman photographed Canada geese, gadwalls, and hooded mergansers at Hager Pond in Marlborough.