Hi, I am getting my chickens this spring and we are building our 4.5x5.5 coop (for 6 hens). Any advice on whether we should insulate or not. I've had conflicting advice. We live in Massachusetts where winters are cold and snowy. I have a local friend who does not insulate her coop and her 6 chickens do fine. Another friend has an coop which came insulated and her chickens do fine as well. Any advice would be appreciated? (The argument is that the feathers/down protect the bird and insulation can interfere w/ ventilation which the birds need).