Um 21 days there is no particular month ahaha
Ducklings are not born, they are hatched. Yes, they can see after they hatch.
no they will not.
she acts very extatic
yes they will
If they are with a mother, pretty soon after they hatch, but if they are not, once thy get all of their feathers.
I don't think sitting on the eggs makes them hatch, but the down in their feathers keps the eggs warm and therefore the ducklings alive!
No you need to have a female and male duck to have baby ducks.
Ducklings hatch from eggs, just like all birds.
it depends on the type of duck egg you have. i had a cayuga duck, it was incubated at 99 - 99.5 degrees for approximately 28 days.
She will probably brood them, and care for the ducklings when they hatch. It's a pretty common practice to give hens that are known to be good brooders the eggs of other fowl to hatch. Just make sure you provide the ducklings with plenty of duckling mash - the hen won't know the right kind of food for them.
Ducklings become fethered at about 6 weeks old, they begin to quack around 4 months old, and females lay eggs at 8 months old (around this time ducks become sexually active).
1 MONTH