Canadian Wildlife Federation
Hinterland Who's Who: American Black Duck
Canadian Wildlife site showcases the American Black Duck. Highlights its' habitat and habits, unique characteristics, breeding and feeding.
Nature Canada
Nature Canada: American Black Duck
A fact sheet giving information about the American black duck and efforts to restore the population to its 1950s levels.
Cornell Lab of Ornithology
Cornell Lab of Ornithology: American Black Duck
Highlights of this comprehensive site include a description, cool facts, conservation status, habitat, range, diet, behavior, reproduction, and conservation status. You can also listen to the sounds of this bird as well.