Ok, I know the chicken's in my coop are fine. They (including my silkies) did fine last winter in their coop. I have a turkey, a leghorn, and 4 of my mixed chickens who like to sleep outside though. They sleep on the roof of the coop and a roost in the run. The part of the run they are in is enclosed and covered with a tarp. Will they get too cold? Would adding tarps around the sides help? Or do I need to go every night and drag all of them into the coop? I did that for around 3 weeks, and they still all try to sleep outside. Since they are so determined to sleep there, I'd like to let them if not harmful. It gets pretty cold here, sometimes down in the negative teens for a few days at a time. On the bright side, from my trying to get them in every night, I have almost got my turkey trained to step up onto my arm on command.