The Collaborative International Dictionary of English v.0.48:

Golden-eye \Gold"en-eye`\ (g[=o]ld"'n*[imac]), n. (Zool.)
   A duck (Glaucionetta clangula), found in Northern Europe,
   Asia, and America. The American variety (var. Americana) is
   larger. Called whistler, garrot, gowdy, pied widgeon,
   whiteside, curre, and doucker. Barrow's golden-eye of
   America (Glaucionetta Islandica) is less common.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Doucker \Douck"er\, n. [From aouck, for duck. See Duck, v. t.]
   (Zool.)
   A grebe or diver; -- applied also to the golden-eye, pochard,
   scoter, and other ducks. [Written also ducker.] [Prov.
   Eng.]
   [1913 Webster]