Ducks, Swans, and Geese
Anas platyrhynchos
The Mallard is a widely recognized dabbling duck found across the Northern Hemisphere and introduced in many other regions. This adaptable species is the ancestor of most domestic duck breeds. Known for its distinctive appearance, particularly the male, it thrives in various wetland environments, often coexisting with humans.
Typical adult measurements.
Individuals and populations vary.
01 / The telltale details
Start with shape and behavior. Then look for the smaller details.
Iridescent green head, white neck ring, chestnut breast, gray body, and a yellow bill.
Mottled brown plumage with an orange bill that often has black markings.
Both sexes have a metallic blue patch on the wing, bordered with white, visible in flight and sometimes at rest.
Both sexes have orange legs and feet.
02 / A place in the world
Mallards inhabit a wide range of wetland environments, including shallow ponds, lakes, marshes, rivers, and estuaries. They are highly adaptable and can be found in both wild and urban settings, such as city parks and agricultural fields.
This species breeds throughout temperate and subtropical regions of the Americas, Eurasia, and North Africa. It has also been introduced to various other parts of the world, including New Zealand, Australia, and parts of South America.
Mallards are partial migrants; wild populations in North America are generally migratory, breeding in northern areas and wintering further south. Feral populations may be permanent residents. Pairs often form in the fall and winter before spring migration.
03 / Listen a little closer
Female Mallards produce the characteristic loud 'quack' call, often in a decrescendo series. Males make quieter, raspy sounds, grunts, and whistles, especially during courtship.
04 / The life behind the feathers
Mallards are omnivorous generalists, consuming a diverse diet. They primarily eat aquatic vegetation, including seeds, roots, and stems, but also forage for insects, worms, small fish, snails, and agricultural grains.
These ducks are dabblers, feeding by tipping their heads and necks underwater or up-ending to reach submerged plants and invertebrates. They rarely dive completely and also graze on land.
The female builds a shallow, bowl-shaped nest on the ground, often concealed by vegetation near water. She lines it with grasses, leaves, twigs, and down feathers plucked from her breast. She incubates 5-15 eggs, typically 7-10, for 26-30 days.
Mallards are social birds, often congregating in groups. Pairs form in the fall and winter, though males may pursue other females. Females lead their young from the nest shortly after hatching.
One more reason to pay attention
The Mallard is the ancestor of nearly all domestic duck breeds, except the Muscovy Duck.
Mallards can hybridize with other wild duck species, such as the American Black Duck and Hawaiian Duck, which can pose conservation challenges for rarer species.
Mallards are strong flyers, with migrating flocks estimated to travel at speeds up to 88 km/h (55 mph).
05 / An eye for the difference
American Black Ducks are darker overall, appearing uniformly very dark brown, and lack the female Mallard's pale belly and whitish tail.
Female Mallards can be confused with Mottled Ducks in Florida and along the Gulf Coast.
The Mexican Duck, found in central Mexico and the southwestern U.S., is closely related to the Mallard, and males resemble female Mallards.
AI-assisted species research. Prepared September 2026. Details can vary across regions and populations.