you no i think we tend to put the plastic up to hold the warmth in and with good intentions of keeping them warmer.but i think it also holds the moisture in and causes more harm then good ..i did the same thing with my coop last yr and i had some pretty frostbiten birds from it ..i have since removed the plastic and filled in the cracks in the coop and i am seeing alot less frostbite then last yr ..i also have alot more birds but i think even with the venting i have done , it seems to be alot less damaging to the birds ..i think as long as we can keep them from having drafty coops with out the plastic we are further ahead then to use it ..sorry am i rambling now ..
I agree and I was going to caulk the drafts, but winter caught me and I will have to wait till Spring to caulk. I only use the plastic around the 2-foot summer gaps to keep the high winds out and will remove it in the spring. I will be updating all the caulking and adding another room on the coop in the summer, so, hopefully, next winter will be easier