There are two more vents exactly like this one on that wall facing the brick wall like you talked about. I didn’t include a picture of that wall but it is the high side of the coop.
There are two more vents like this one that are just inside the human gate that I didn’t include a picture of and they are on the very highest side of the coop. And we installed the window backwards and leave it open all of the time. We are pretty close to the 1 sq ft per chicken.
We are first time chicken owners. Our ladies are about 11 weeks old. My husband and I built our own coop and run. We didn’t really know what we were doing so it took us way longer than anticipated and the girls stayed in the garage for longer than they wanted. When we came out in the garage...