It's normal even if there is a drake. lol those girls are just nutty once hormones begin to kick in and sometimes one wants to be top female to so dominance can also play into it.So, I am now getting two duck eggs every morning. I only have two runner ducks so that means they are for sure both girls, right? Then why are they trying to mate with each other?? It's making me crazy. Is this normal if they don't have a drake??