Occasionally you may find them on the sea shore, too. They feed on insects, worms, slugs, snails, frogs and various kinds of shellfish, as well as grasses and other bankside vegetation. They remain here all through the year.
Mallards usually nest on the ground, often in dense undergrowth beside lakes and streams.
They will also nest in holes in trees, sometimes well above ground level. Between March and May the female lays between eight and fourteen eggs in a nest of grass and sedge lined with fine down. Having camouflaged plumage, the female does all the incubation and looking after the young.