Laysan Duck vs Mexican Duck

In short

The Laysan Duck and Mexican Duck can be distinguished by their habitat preferences and subtle plumage differences. The Laysan Duck is a small, dark brown duck with a prominent white eye-ring, often found on the Hawaiian Islands, while the Mexican Duck is more widespread in the southwestern U.S. and Mexico, resembling a female Mallard but without the white eye-ring.

Identification tips

• Look for the white eye-ring on the Laysan Duck, absent in the Mexican Duck.
• Note the habitat: Laysan Ducks are found in Hawaii, while Mexican Ducks are in the southwestern U.S. and Mexico.
• Mexican Ducks resemble female Mallards but lack the white eye-ring.

Size

Both species are similar in size, but the Laysan Duck is slightly smaller and more compact.

Plumage

The Laysan Duck has a prominent white eye-ring and may exhibit white feathering on the head and neck due to leucism. The Mexican Duck lacks the white eye-ring and has a more uniform brown plumage, similar to a female Mallard.

Behaviour

Both species exhibit dabbling behavior typical of ducks, but specific behavioral differences are not well-documented.

Habitat

The Laysan Duck is restricted to the Hawaiian Islands, particularly Laysan Island, while the Mexican Duck is found in the southwestern U.S. and Mexico, often near permanent rivers and lakes.