I have sixteen hens, eight of which are about 2 years old, the other eight of which have just started laying. In the past few months, egg production has dropped gradually to where I now get about a dozen eggs or fewer a week. I've had egg eaters before, and at first, thought that that must be what was happening again, but I can find no evidence of it, on the girls' beaks or in their boxes. The girls seem healthy and stress-free. Poo looks normal (although I haven't thoroughly examined it yet). I know I have a mouse problem right now...Is it possible that mice are taking ALL of my eggs? Or could parasites, worms, or some disease be responsible for this? I'm at my wit's end with this.