Hi I’m new to chickens and thinking about starting out with 2 pullets. I want to start with a prefab coop, I know they aren’t always the best but it’s the best I can do for right now and hope to upgrade in the near future. I plan to make modifications as needed. I will keep them contained at night and when I can’t supervise but I have a fenced area where I can let them out when supervised. My main question is do I need to lock them into the enclosed nesting box space at night? Looking at this coop I was concerned there wouldn’t be enough ventilation. The window looks to have plastic on it and there’s 2 small holes in the back of the coop. Although since there is a door that opens and closes I’m assuming it’s ok to lock them in there at night to stay safe. Just want to make sure they will have enough air in there! Thanks so much for any helpful advice/information!