American Black Duck (Anas rebripes) - 04Jan2021 & 11Nov2023 & 14Dec2016

This is a common duck in NC but unless you see it in one of the more wild places, chances are it has hybridized with Mallard.  This one was photographed at Pea Island in North Carolina.

Here is one from Wilmington that flushed when I got too close.  You can see the speculum feathers lack the white edging of Mallards or Mottled Ducks. 

Here are a few that I photographed in flight at Miles Pond in Gloucester Massachusetts.