I just came on to research the same issue. I have 3 Bared rocks, and 2 Isa Browns. The one Isa lays daily and there is one br that seems to lay occasionally. Had one br prolapse, then get egg bound so I forced a molt in her, so I can accept that she is not ready to lay yet. But, the others are slacking. The coop is clean, we feed primarily layer crumbles, (Layena)), and one egg is pretty much what I am getting. I love my birds, but I can only have five and I need the eggs. I suppose there may be some sort of random...I can't figure it out...stress, because one hen has gotten her head pecked and is bald. But, these are the same hens I have had for 2 years, the same coop, the same lighting, the same space, everything has recently been completely cleaned, everyone seems really healthy. So, what to do. What can I do. I have a pecked hen and no eggs. The only change is one hen is removed to force her molt and help her recover from the prolapse and egg bound problems, but she was probably the bully of the group. No one is brudy, no one is sick, no one is molting, so I am at a loss.