The wild ducks also know as mallard (Anas platyrhynchos) is the ancestor of most of our domestic ducks that are used for the production of all the deliciousness mentioned in other posts on this site.
Wild ducks are quite beautiful birds, particularly the male has bright colored feathers.
This pair of wild ducks liked to be photographed better, although this male has an unusual coloration for a wild duck:
These are city dwelling wild ducks and they have been frolicking right in front of me without fear.
In more rural areas they are hunted for their meat, apparently in areas where they can gorge themselves on grains they even produce a sort of wild foie gras:
The article referenced above also suggests that another point I am trying to make on this website — sugars (grains) make you fat — is true for ducks too, not just for humans.