Mexican Duck (Anas diazi) lives in freshwater wetlands across North America. It feeds on aquatic plants insects.
Fascinating facts about the Mexican Duck
- Until 2020 the Mexican duck was lumped under the mallard as Anas platyrhynchos diazi, but the American Ornithological Society split it into its own species that year. Genetic work on the mtDNA control region showed it is the southwestern cousin of the American black duck, sharing a fairly recent common ancestor. This shift reflects how subtle plumage and behavior cues can maintain species identity even when genes still flow between groups.
- Most Mexican ducks stay put year-round, yet the northernmost birds head south to Mexico each winter. The species also shows up in Colorado throughout all seasons, though in modest numbers, and scattered sightings have been recorded in Utah, Wyoming, Nebraska, and Montana. This patchy distribution means the duck can exploit a variety of aquatic habitats.
- Although listed as least concern, the Mexican duck is slipping slowly because its wetlands are vanishing and hunters still take birds. Hybridization with mallards, birds that thrive in altered habitats, adds pressure, as mallard genes spread through the population and dilute its distinct identity. The duck once earned endangered status in the U.S. Fish and Wildlife Service in 1967, only to be delisted in 1978, highlighting how quickly fortunes can change. Protecting intact wetlands and favoring the hunting of mallard drakes could halt this decline and preserve the Mexican duck's genetic legacy.
- At just 45-55 cm long and weighing 849-1,243 g, the Mexican duck. Its a striking blue speculum edged in white that flashes in flight, while the male's bill shines brighter yellow than the female's.
- A Mexican duck clutch holds between two and ten eggs, and the parents sit on them for exactly 26 days before the chicks hatch.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeNorth America
HabitatFreshwater wetlands
DietAquatic plants insects
About the Mexican Duck
In the warm, golden light of a Mexican wetland, the Mexican Duck glides effortlessly across the water, its mottled brown feathers blending seamlessly into the surrounding reeds and rushes. With a gentle quack, it paddles through the shallows, its webbed feet leaving barely a ripple in the calm surface, as it searches for the aquatic plants and insects that sustain it. As it moves, its bright orange legs and feet flash like beacons, a fleeting glimpse of vibrant color in an otherwise subdued landscape.
Hear the Mexican Duck, and 4,400+ more
Real recorded sounds, 11 nature games and a free Daily 5, 1v1 quiz duels, conservation wins and a safe Kids mode. Free on Feravox.
