This page is for the American Black Duck (Anas rubripes). These ducks are very similar to other species such as the Mallard so they are difficult to distinguish. After thinking I have seen an American Black Duck on several occasions, only to be disappointed, I finally was able to see some in the field.
Those were the best images I have taken of this species so far. For additional photos that are more for documentation of observations, please see my secondary page at: American Black Duck