I have a 9 x 4 coop with a slanted roof that needs more ventilation for the winter. I'm in Massachusetts and the winters get pretty cold here. It's confusing to read that you need to add vents to allow air to exchange- in the winter, but be able to close them as well when it's cold. Sorry i'm new to this and just want to get it right for my girls. Not sure what is the best option for my coop. My husband has installed a bunch of the round vents in the eves, but i am looking for visuals of what to add toward the roof line to allow more ventilation. I have read pat's page (thanks pat), but i'm still looking for the visual ideas. My husband thinks what we have will be fine, but as i read more and more, we need more ventilation... I'm finding that many are looking for the same thing. Looking for photos of how you vented your coop other than windows-more for gable vent idea. I see that some just cut long rectangular holes added screen or chicken wire and then covered them with wood on a hinge-not sure how this will allow ventilation in the winter months? What did you install? Where did you buy it? When do you open and close them and how? thanks!