Yes, otherwise The egg wouldn't be fertile, and wouldn't actually contain a duckling, and the egg would just go rotten.
In eggs
No you need to have a female and male duck to have baby ducks.
the ducks hatch in the spring normaly in the 2nd week
Yes ducks can lay eggs without mating, the won't be fertile, they need to mate for that and to have baby ducks maybe by artificial insemination? are you asking if they artificially inseminate ducks?
The fertilized egg develops after it's laid. The developing embryo grows inside the egg until it's grown enough to hatch out. The egg contains a tiny air-sac to allow the baby duck to take a breath while it fights to break the shell. The babies are alive inside the egg.
the fact about duck eggs are that it take about 28 day to hatch.
First of all, male "ducks" are called drakes. If the female is currently laying on her eggs trying to hatch them, it should be fine to leave the male around. If she's not take away the eggs from her. Unless they are fighting the male is fine.
21 to 30 days
Drake eggs hatch into little pet drakes that follow you around and are the color of whatever color the egg was.
28 for common ducks and up to 35 days for Muscovy ducks.
the mother finds a mate and after they take care of their business, a few or so weeks later the mother lays eggs which will, in a couple of weeks and mom's care, will hatch into baby ducklings
Humans frequently do hatch the eggs of ducks and other birds (and reptiles) using incubators.