So I sent my chickens to the coop last night for the first time. The coop is only 3x4, about 50" tall. It has a ventilation hole in the back (covered in wire) that I can open and close. This hole is about 6" tall and 30" wide. Across from it is a small window that I can also open and close. The window is about 6" tall and 6" wide. Around here, temps are running a low of mid 40s and a high of mid-upper 60s. Not much wind moving, but it is rainy and stormy right now. Originally, I had both the ventilation hole and window open, since I know many people say not enough ventilation is a common problem in coops. But my dad (a dairy farmer, but not a chicken farmer) says the small window is all they need right now, and the big ventilation hole is giving them too much air. What do you chicken experts think?