Well yes...lol....Birds do wean in a sense...The hormones that have them rearing young subsides and the Baby birds mature quickly and do not need Momma anymore.....
If you take all the Ducklings away from her she will get frantic and depressed as she searches for them...You will have let here raise them if she wants too?....Sell them once they are weaned at around 4 to 5 weeks old.....Or keep one for her till that age...:frow