Mallard

The Mallard is the archetypal wild duck, ancestor to nearly all domestic duck breeds and one of the most widely distributed waterfowl species on Earth. The breeding drake is unmistakable: an iridescent bottle-green head, bright yellow bill, chestnut breast, gray flanks, and a curled black tail feather, all set off by a crisp white neck ring.

Females are mottled brown overall with an orange-and-black bill, providing camouflage while nesting, but both sexes share a bright blue speculum (wing patch) bordered in white, visible in flight or at rest. Mallards are highly adaptable and comfortable around people, making them the default "duck" familiar to most people worldwide.

Key Field Marks

• Breeding drake: glossy green head, yellow bill, white neck ring, chestnut breast, gray body, curled black tail feather
• Female: mottled brown overall, orange bill with dark saddle marking
• Both sexes: blue speculum bordered front and back with white bars
• Orange legs and feet

Similar Species

American Black Ducks are darker overall with a duller olive bill and lack the male Mallard's bright coloring; female Mallards can resemble female American Black Ducks but are paler and browner with a more contrasting bill pattern. Domestic and hybrid ducks derived from Mallards can show unusual plumage combinations, but pure wild Mallards follow the classic pattern described above.

Mallards are extraordinarily adaptable, found on virtually any body of water from wilderness lakes and marshes to farm ponds, city park lagoons, and roadside ditches. They breed across most of North America, Europe, and Asia, and have been introduced widely elsewhere.

Many northern populations are migratory, moving south in fall to escape freezing water, while Mallards in milder climates and urban areas often remain resident year-round. They tolerate a very wide range of habitats and climates, contributing to their status as the most numerous and widespread duck species in the world.

Mallards are dabbling ducks, feeding by tipping forward to graze on submerged vegetation and invertebrates rather than diving, and they also readily graze on land and accept handouts in urban settings. Their diet includes aquatic plants, seeds, grain, and various invertebrates.

The female's voice is the classic loud, descending "quack-quack-quack" familiar from cartoons and childhood books, while the male's call is quieter and raspier. Pairs form in fall and winter, and females build a nest of grasses and down on the ground, often near water but sometimes surprisingly far from it, laying 8-13 eggs that she incubates alone. Mallards are also notable for readily hybridizing with many other duck species.