Longtailed Ducks (Clangula hyemalis) August 3, 2020 1800 × 1200 Longtailed Ducks (Clangula hyemalis) Longtailed Duck (Clangula hyemalis) male, Jan 2015, Montauk. Winter visitor. IN STEEP DECLINE. January, 2015. Montauk, New York.Lakes, ponds, protected bays. Winter visitor. IN STEEP DECLINE.