Okay, so I have 11 hens that are under two years old and for some reason they have stopped laying. They used to lay 7-8 eggs a day and know I'm down to 0-2 a day. This has been going on for about 4-5 weeks know and I don't know what to do! It has been cold here (I'm in Indiana, and it is winter), but I have a two lights in there, one is a heat lamp; they have food and water; they aren't stressed as far as I can tell; I've been adding oyster shell to their food and they are not molting or brooding either. Their coop is clean, and they haven't been laying anywhere else. I don't know what to do. The only other thing I can think of is that the coop is too small but I'm not sure that is the problem either. Do they just stop laying for a while? HELP!!