nigger duck

plural nigger ducks

1. datedoffensiveSynonym of American black duck

   […] nigger ducks spoil all the fishing." "You tell your father and the other fishermen that these birds are protected by federal and state laws," Professor Weston answered crisply.

   1940, Edna Hoffman Evans, Bill and the Bird Bander, page 95

   1 more example

   One more tack between a small mangrove-tentacled islet and the nigger ducks and mile-or-more bird's lighting post, the black channel marker, and leaving the two pranksters fast on the bar I pointed the cat's bow up the bay on a quarter run toward City Pier.

   1945, MotorBoating, volume 75, number 3, page 90

   Synonyms: American black duck