I have a black giant, two R.I. reds, and a barred rock that are 26 weeks old and I still don't have any eggs. I have a nesting box built with 4 nests. Also they share the coop with several other birds, but most are young. I am afraid one of them are eating eggs. So I have two questions. One, should I expect to get eggs from these hens. Two, how do I go about proving if and who is eating the eggs. Please help!