If duck eggs get wet will they hatch?

The eggs need moisture to hatch, in nature, the moms leave the nest once a day for half hour to eat, drink and bathe themselves... when they come back wet, this provides needed moisture to the egg. If you incubate them it is important to study how much moisture to have in the incubator daily. It's impossible for a duck to ever get wet, even when it's a baby. Duck's have this one special oil in their feathers which makes water stay off them. This oil is provided to them by their mother when they are babies, but when they get older, they start producing it on their own in their mouths and they rub it onto their feathers. If your babies are born under an incubator, you need to wait until they are old enough before you let them swim, unless they have a mommy duck to coat their feathers.