A typical clutch for a Mallard Duck may be up to 13 eggs; the mother lays the eggs at one- to two-day intervals, and does not begin incubation until all eggs are laid. Because embryo development doesn't occur until incubation, the weather conditions during the laying phase typically don't affect the clutch.

Do female mallard ducks lay eggs?

Mallard Eggs

The female does not lay her eggs all at once; she will lay up to a dozen dull green or white eggs over a period of days. She does not begin incubating the eggs until she lays the last egg. ... During incubation, when she leaves the nest to eat, she hides the eggs with vegetation or down from the nest.

Do female ducks lay eggs regularly?

Ducks lay eggs every day like chickens. They generally lay well through the winter too without any added light.