Hi everyone, it's winter here in Montreal and its VERY cold, -25 it gets to. Most of my girls have frostbite, I tried everything and I can't seem to stop it. Is it really bad for them?? The ventilation in the coop is good, they have a heater that heats it to probably 17-20 degrees, and they have fresh water and food all the time. I let them out of the coop all day, but they have access to the warm house, but insist on coming out. When it's very cold I'll keep them in and they squak about it, and I let them out. also I'm curious about diseases, in 2 years in going to get day old chicks and then once fully feathered introduce them. I forgot about diseases though. How can I ensure my chickens can live together without getting sick is dying?