If do you mean "Can a mother duck have two nests going at the same time?" the answer is no.
very carefully
Nothing. It will probably sit on it for a while if you leave it in the nest. After a while it should give up. It may keep laying eggs and have several in the nest.
The nest.
mimicry
Cuckoos and cowbirds are famous for laying their eggs in other birds' nests, and leaving the chicks to be raised by the other birds.
nest but on the ground
The nest.
in a nest.
The nest.
A duck will sometimes sit on unfertilized eggs. Usually, after a while the duck will come to realize that the eggs are not going to hatch and she will give up and move on.
Ducks mostly find food in the pond which is either pond fish or bread sunk from tourists that fed them.But the duck would have to find food in their habitat as they cant leave the nest out of sight as either if they have eggs a blackbird or a crow will come and eat them. Or if another bird lands in it, the senses will be left in the nest and when the duck comes back the sense of the other bird that was there will be smelt by the other duck and fly off making another nest in a quieter place as they can find.
Well yes. Sometimes the roosters sit on the nest to encourage the hen to go broody. But roosters don't lay!