The ducklings I am talking about? if so she hatched them First time mama and just freaked out I guess.That’s my biggest fear. How old were the ducklings when the attack happened? We will definitely be introducing them cautiously.
Never leave a young duckling alone with other birds, they have no way of protecting themselves.
Just gradually start introductions so the adults get used to the little one. It's going to be harder to place 1 in with others. So this is probably going to take a while.
But in the meantime to can have some wonderful times with your little one.