MallardAnas platyrhynchosVar och när du kan se dem

The Mallard is familiar enough to be overlooked, yet it offers one of the clearest introductions to river wetland ecology. A breeding male’s green head, grey flanks and curled black tail feathers contrast with the mottled brown female, but both belong to a highly adaptable dabbling species. Cornell records Mallards across North America and Eurasia in wild wetlands as well as parks. This registry includes multiple rivers, and each location retains its own evidence rather than borrowing a calendar from another continent. Familiarity around people does not make every Mallard domestic: watch the feeding method, mixed flock and habitat context before dismissing a bird as merely a park duck.

Storlek

Not verified

Vikt

Not verified

Livslängd

Not verified

Status

Not verified

Mallards usually obtain food by dabbling, tipping forward or picking at the shore rather than pursuing fish underwater. They also walk through fields and along muddy edges. Females generally nest on the ground beneath concealing vegetation, though artificial structures and unusual settings are also used. The nest is formed as a shallow depression and lined with nearby material and down. A female may be concealed only a short distance from a busy path, making off-trail exploration particularly disruptive. Watch feeding and resting birds without encouraging them to approach. Families need uninterrupted routes between cover and water; a duckling near an adult is not an invitation to move closer for a portrait.

• Mallards are dabbling ducks.
• They also forage on land.
• Females usually nest on the ground.
• Nests are lined with down.
• The diet includes aquatic invertebrates.
• Agricultural grain is eaten during migration.
• The male has curled black tail feathers.
• Most domestic duck breeds descend from Mallards.
• The species occurs in North America and Eurasia.

For Mallard, the strongest local viewing guidance here is the Upper Mississippi refuge’s own recommendation for backwater overlooks. Its birding account explicitly names this species among ducks gathering from mid–late September through late October or early November. The stored months are therefore September, October and November, but the first and last are partial windows; this is not a claim of equal abundance throughout all three months. This recommendation applies only to the listed Upper Mississippi refuge backwaters; all other registered locations retain unknown months.

Mallards use marshes, floodplains, beaver ponds, lakes, reservoirs, estuaries and temporary wetlands, as well as human-managed waters. Feeding can extend into ditches, pastures and cultivated fields. This breadth helps explain their presence in several river registries, but does not establish equal abundance throughout each basin. Sheltered edges and shallow backwaters usually offer more interpretable feeding observations than a distant main channel. Where riverside parks hold domestic waterfowl, wild birds may mix with unusually coloured individuals. Use the registered reach as the geographical starting point, then check current access to its wetland margins rather than assuming every waterside lawn or field is open to visitors.

Seeds, aquatic vegetation and animal food all form part of the Mallard’s generalist diet. Cornell describes substantial use of aquatic insect larvae, worms, snails and freshwater shrimp during breeding, and agricultural grain during migration. Birds dabble at the surface, tip to reach underwater food and pick items from the ground. These different actions explain why a Mallard may alternate between shallow water and a muddy shore without changing its basic feeding strategy. Bread is not needed to sustain an observation. Watching a natural feeding patch reveals how depth and vegetation affect access to food, whereas handouts concentrate birds around people and obscure their choices.

Namn

Mallard

Scientific name

Anas platyrhynchos

Djur grupp

Birds

Storlek

Not verified in the accessible source text.

Vikt

Not verified in the accessible source text.

Livslängd

Wild lifespan not verified in the accessible source text.

Status

Current global conservation assessment not verified.

Identifiering

A breeding male shows a green head, narrow white neck ring, chestnut breast, grey flanks and curled black tail feathers. Females are mottled brown and require attention to bill, face pattern, proportions and wing pattern rather than overall colour alone. Both sexes have the familiar broad-billed dabbling-duck shape. Domestic ancestry complicates some riverbank flocks: unusually white, dark or bulky ducks may derive from Mallards without resembling typical wild birds. Nonbreeding males can also look much less distinctive than breeding drakes. Use several features and compare neighbouring species; a brown duck’s association with a green-headed male is not sufficient identification.