Good afternoon, I just built a hen house. (I don't have any birds at this point, but will in the spring). the hen house floor is 6x5 with the front being 6 1/2 feet tall with a 4 foot back. it's a lean to roof style. I live in Connecticut, and we can get quite a bit of snow from time to time. so I wanted enough pitch on the roof. the front of the coop has a opening of 72" long and 4" wide opening for ventilation. the coop faces southeast. I'm planning to have 6 chickens. I think I should have enough ventilation for six chickens. If I don't should I make another opening on the southwest side? I really didn't want to do a northeast to southwest opening for cross ventilation unless you all think it may be wise to. the back of the coop is only 4 foot so I thought it could get drafty on that side. thanks in advance.