Mexican Duck vs American Black Duck

In short

The Mexican Duck and American Black Duck are similar in appearance, both being part of the North American black duck complex. However, they can be distinguished by subtle differences in plumage and habitat preferences. Mexican Ducks are typically found in the southwestern U.S. and northern Mexico, while American Black Ducks are more common in eastern North America.

Identification tips

1. Location: Mexican Ducks are more likely in the southwestern U.S. and northern Mexico, while American Black Ducks are found in the eastern U.S. 2. Plumage: Look for the darker, more uniform plumage of the American Black Duck compared to the slightly paler Mexican Duck. 3. Face Color: Mexican Ducks often have a paler face compared to the American Black Duck. 4. Speculum: American Black Ducks have a purplish speculum bordered by black, which can help in identification.

Size

Both species are similar in size, resembling the Mallard, but the American Black Duck is slightly bulkier.

Plumage

Mexican Ducks have a more uniform brown body with less contrast between the head and body, and they often show a slightly paler face. American Black Ducks have a darker, more uniform brown-black plumage with a more distinct contrast between the darker body and the lighter head, and they often have a purplish speculum bordered by black.

Behaviour

Both species exhibit similar dabbling duck behaviors, often seen foraging in shallow waters.

Habitat

Mexican Ducks are associated with permanent rivers, large playa lakes, and irrigation developments in arid regions. American Black Ducks prefer freshwater and saltwater marshes, estuaries, and coastal bays, primarily in the eastern U.S.

Voice

Vocalizations are similar to the Mallard, with both species producing quacking sounds, but specific differences are not well-documented.