Summers are hot and humid in GA but we do get some cold weather in Winter and occasional snow. I'm feeling torn about ventilation and windows in our henhouse and would love some feedback. Here's what we have going now: - measures 3x5 (we have 3 hens) and is attached to a covered run that they will have unlimited access to. -ceiling is hardware cloth with translucent polycarbonate roof a couple inches above for ventilation and light. How much additional ventilation do you think we need? Will they just sleep in the run in the summer? Can any windows we add be left just hardware cloth or will we need to be able to fully "close" them?