I see lots of great advice here and always start my search here with any new questions. I can't find the all of the answer to my current question. This is my first winter with chickens. I have three that roost in the rafters of their run. They have from day one, last March. They do not go in their coop at night. There are 2 roosting bars at different heights in their coop. We thought maybe it was too dim in there and they hadn't noticed them so we added a window. They have no interest. They go in to go to the nesting boxes to lay, which are offset/stick out of the side of the coop, but that is all they have to do with the coop. Last week, we had a night that was going to be under 30 so we caught and shut them in the coop. They gave us quite a talking too. They were incredibly upset and slept in the nesting boxes instead of roosting. I was expecting a mess the next day but two of them held it all night long. I did not think chickens could even do that. I can't think that is healthy. One of them did not lay again until the third day after. Normally she only skips a few days a month, and when she does, the next day she is up before the sun with the need to lay an egg. I see all kinds of advice that chickens are hardy and if their coop is well ventilated and dry they will be fine in winter temps, but what if they won't use it? I see advice that says keep shutting them in and they will eventually rehome to the coop. Do we force the issue and shut them in there no matter how upset and stressed they get? 2 of the girls go all the way up in the rafters of the run and sleep side by side. One of those is a Naked Neck Turken so I worry about her and the cold with her bare chest and neck. The third can't get herself that high and sleeps alone on a lower bar. She will have no one for body warmth. I have put some plastic sheeting up on the chicken wire to help with wind, but the run is 15x20 ish so there will still be breezes and no way to collect warmth. Two nights of mid to low 20's are coming. One is supposed to be breezy. I live in SC so freezing temps are not usually long term or that often. So the question in a nutshell is the stress of locking them in better or worse than the cold? Will they hurt themselves by holding their waste all night? I would love some advice.