On the other hand, the female is only brown and white. The length of the normal mallard is about 50-60 cm. The mallard duck is found mostly in North America and Northern Central America. In the winters the mallard is found in the south but does not nest there. They nest in such places as under boulders, in tree holes, in the crotch of trees or in open areas.
Mallards form breeding pairs as early autumn.
The male mallard, or drake, leaves the female when she begins incubation and forms a group with other males. Nine to thirteen eggs are laid at daily intervals. Incubation begins when the clutch is complete and lasts for 27 to 28 days. The ducklings all hatch within 24 hours, mostly during the day and are led to water. Mallards mature quickly and may breed under 12 months of age.