American Black Duck

Identification

The American black duck is a large dabbling duck, the heaviest species in its genus, weighing 720–1,640 grams and measuring 54–59 centimeters in length with an 88–95 centimeter wingspan. While it somewhat resembles the female and eclipse male mallard, the black duck is noticeably darker overall. Males and females are generally similar in appearance—an unusual trait among ducks—but males sport a bright yellow bill while females have a dull green bill with dark marks on the upper mandible. The head is brown and slightly lighter than the darker brown body, with streaked cheeks and throat. Look for the distinctive iridescent violet-blue speculum feathers with black margins on the wings. The orange feet have dark webbing. In flight, the white underwing linings provide striking contrast to the blackish underbody.

Range & Habitat

The American black duck is endemic to eastern North America. During breeding season, it inhabits coastal and freshwater wetlands from Saskatchewan to the Atlantic in Canada, and throughout the Great Lakes and Adirondacks in the United States. This is a partially migratory species, with populations mostly wintering in the east-central United States, particularly in coastal areas. The species has adapted to various wetland types across its range.

Behaviour & Diet

Like other dabbling ducks, American black ducks feed by tipping forward in shallow water to reach vegetation and invertebrates. Once eggs hatch, the hen leads her brood to rearing areas abundant in invertebrates and vegetation. Both males and females produce calls similar to mallards, with females making a loud sequence of quacks that fall in pitch. The American black duck interbreeds regularly and extensively with the closely related mallard. Females typically lay six to fourteen oval eggs with smooth shells in varied shades of white and buff green. Incubation averages 25–26 days with both parents sharing duties, and fledging takes approximately six weeks.

Best Time & Places to See It

The best time to observe American black ducks depends on location and migration patterns. In breeding areas of Canada and the northern United States, spring through summer offers excellent viewing opportunities. Winter observers should focus on east-central coastal areas where populations concentrate. Coastal wetlands, freshwater marshes, and shallow bays throughout their range provide reliable habitat for spotting these ducks. The Atlantic Coast provides particularly good viewing opportunities during migration and wintering periods.

Photography Tips

Photograph American black ducks in shallow wetlands where they dabble, capturing their characteristic feeding posture with rear ends in the air. The contrast between their dark plumage and bright yellow (males) or greenish (females) bills makes for striking portraits. In-flight shots reveal the dramatic white underwing linings against the dark body—position yourself near water where ducks take flight. Early morning and late afternoon light will enhance the subtle iridescent violet-blue of the speculum feathers and the orange feet. Coastal areas offer open water and good lighting conditions for both action and detail photography.