I have ten chickens 6RIR,2 buff orphington, and 3 barred rocks.One of my RIR started laying last Saturday and has been laying for a week. I have another one that has started to lay off and on. I have 3 barred rock chickens who are about 3 weeks younger than the rest of the hens. I was gone yesterday and came home and found two eggs one broken. I watched the hens this morning and one of my barred rocks was digging in the nest quite a bit jumping up in the nest when one of my RIR was laying. I believe she is an egg eater not sure what to do except cull. I took the egg this morning after my RIR jumped out and Barred Rock was in the nest and I think was going to eat another egg. Let me know if you have any suggestions. I had golf balls in the nest before they started laying and I thought that would help down the road with egg eating.