Long time lurker... first time poster (I think)! I am a complete newbie. I live in North Western Illinois. Cold winters and hot summers. Quick history so far. We started with 4 chicks in the mail (2 buffs, 1 BPR, and 1 dominique) back in early June. We lost two (the buffs) to an animal when we were out of town. We replaced them with 1 buff and 1 Ameraucana from a local breeder (hatched in late April). The BPR was found dead one day in the coop. Down the three healthy birds. They were are starter feed + 'free range' ~6 hrs a day 4-5 times a week in the back yard/ garden. In the past month I switched them over to layer feed. (Still no eggs, but I will start another thread for that.) I built a Catawba coop for the birds. This may have been a mistake for my climate. I had good intentions to impress the neighbors and keep the yard in good shape. The tractor, after a couple months of moving it, just ended up in a 'fallow' bed of the garden. Winter is now fast approaching. What are some suggestions to winterize for 3 birds in an 'A-frame' chicken tractor? I have considered placing visqueen over the roof/ open hardware cloth sides, plus a bit at the ends of the roost door. I know this will act as a wind break, but may also reduce ventilation. Also, in this type of tractor, do chickens need food supply up in the roost during the winter, or will they go down into the run to get food from the feeder? Thank you in advance.