The female Mallard has between five and 14 light green eggs that she incubates for 30 days.
The ducklings are lead to water as soon as their soft, downy feathers are dry.
Most Mallard ducks live for one or two years, but some can live as long as 16 years!
Mallards swim with their tail held above the water.
The expression “water off a duck’s back” is a reminder of the waterproof qualities of the feathers. They are kept waterproof by regular applications of oil from the preen gland.
Scoring a duck in cricket reflects the fact that the 0 on the score sheet resembles the shape of a duck’s egg.
Mallard remain a popular sporting bird: they can be shot inland from 1 September to 31 January.
Ducklings are almost exclusively insect eaters, only turning to a mainly vegetarian diet as they get older.
Historically, commercial duck decoys caught thousands of mallard every winter, with most of the birds caught being sent to Leadenhall Market.
A duck doesn’t feed her brood, as they are capable of finding their own food as soon as they leave the nest.
Once all the eggs have hatched the duck leads the brood away to water. They never return to the nest.
A typical clutch is from nine to 13 eggs, but as many as 18, laid by the same duck, have been recorded.
Incubation takes 27-28 days, and all the eggs hatch within the same 24-hour period.
During the summer moult the drake loses his fine feathers and looks very much like the duck.
Ducks will lay their eggs in a wide variety of sites, from grassy riverbanks to the tops of tower blocks. The downy young can survive jumps from great heights.
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