Longtailed Ducks (Clangula hyemalis) October 17, 2018 640 × 427 NY Birds Gallery Longtailed Ducks (Clangula hyemalis), Feb 2018, Napeague. Winter visitor. IN STEEP DECLINE. Late February, 2018. Napeague Harbor, Long Island. Lakes and ponds on breeding grounds, coastal waters in winter. IN STEEP DECLINE.