American Black Duck
American Black Ducks are similar to Mallard Ducks, but with darker plumage. It is not as common as the Mallards and is rarely seen in the park. (Click on each image to see the high-resolution version)
American Black Duck
American Black Ducks are similar to Mallard Ducks, but with darker plumage. It is not as common as the Mallards and is rarely seen in the park. (Click on each image to see the high-resolution version)