I saw my roo pecking an egg I was about to pick up, so it broke open and he ate it. Then my RIR was dust bathing like crazy, and I found a damaged egg with a paper thin shell and kind of sandy spots all over the shell that I think she kicked - probably her egg. So I put an alabaster egg and an egg shaped rock on the coop floor and a golf ball in a nest. The next day the RIR had cracked the tip off her beak! She is very aggressive, taking food out of the roo's beak and chasing the other hens to steal their food. The broken beak has not seemed to change her behavior and she doesn't seem to have a problem eating. But I did feel bad for her, and put all the fake eggs in an nest that had never been used. The next day, a real egg was in there with the fake ones! I have 3 hens, and am getting a max of one egg a day, where I had been getting two, and on rare occasion, three. Don't think the RIR lays very often. The BR and NHR had laid daily. They are losing some feathers, so don't know if that means they're molting or not - they're almost a year old. I think molting is suppose to affect laying...but then it might be someone's eating eggs? Could they be doing that without leaving a trace?