I have four ducks at the moment and 3 are laying eggs daily, but one is not. I have noticed that one of the ducks lower area is hanging way lower than the rest of them. I am hoping this is not a stuck egg problem, but i'm pretty sure it's not just because I can 3 eggs every day. I think one of my hens thinks shes a male but I'm positive she's not. Could the low belly be a cause for concern or just see how she does? I mean it's been this way for over a month and I've never not go 3 eggs...