awwww so sorry. Hope the vet can help her.You don't need to separate them, just get close and listen. The females quack, and the males make only a raspy sound.
I am having a very bad day. I found one of my original flock of Welsh Harlequin ducks with a prolapsed vent this morning. I am trying to get her to hold on till I can get her to the vet this afternoon. I will have to drive an hour to get to a vet that will treat a duck. I don't see the point in trying to push it back in myself, as it will probably just come back out. It need a couple of stitches to hold it there while it heals. I have promised her to a friend of mine, and if she dies I will have to give my friend another duck, so I will be out two from my laying flock. I don't want her to be in pain, but I really hope the vet can save her.