I have two youngish Barred Rocks. They live in a 12 ft sq coop with two attached nest boxes connected to a 20 ft enclosed run. Until today, no sign of egg laying. The only odd behavior I was dealing with was a refusal to roost at night. I moved them, nightly from the nest box to the roost where they would stay all night. They roosted happily outside during the day. So, today, for the first time, we saw an egg. However, it was outside, was empty, and had a hole pecked in it. Also, for the first time, they had removed all the straw bedding from both nest boxes. They were bare! I put the nest boxes back together and put some dummy eggs in one. One girl prompt went for the dummy egg, but gave up when pecking did no good. I gave them some extra food and oyster shell which they ate. Any ideas? I know egg eating is a really tough behavior. But why would they peck and eat the very first egg? And whats up with destroying the nest box? Any thoughts on fixing this?