Mexican Duck

Overview

The Mexican duck, scientifically known as Anas diazi, is a species of dabbling duck that breeds in Mexico and the southwestern United States. Although previously considered a subspecies of the mallard, it was officially recognised as a distinct species by the American Ornithological Society in 2020.

Identification

• Length of 45–55 cm and weight between 849 and 1,243 g.
• Mainly brown plumage featuring a blue speculum edged with white, which is obvious in flight or at rest.
• Males possess a brighter yellow bill than females.
• The male produces a nasal call, whereas the female emits the familiar 'quack'.

Habitat

This species resides in almost all aquatic habitats. Most of the population is resident, though some northern birds migrate south to Mexico in winter. It occurs widely but in limited numbers in Colorado, with records also from Utah, Wyoming, Nebraska, and Montana.

Diet

The Mexican duck primarily feeds on various seeds and aquatic plants.

Did you know?

Concern has been expressed that hybridisation with mallards may ultimately lead to the disappearance of the Mexican duck as a recognisable taxonomic entity, as mallards are better adapted to utilising habitats altered by human activity.