My BO "dropped" two eggs the other day - meaning from the roost rather than in the nesting box. One was a regular egg, the other was a shell-less membrane. I provide oyster shell for them in the pen so I don't think it's an issue of lack of availability of calcium. I've noticed that she hasn't layed since then. Is this a hiccup of some sort? Molting? (I haven't noticed a lot of feathers) Should I worry?