Currently I have a 4x4 coop. We live in Florida. It's hot as hell. Or will be, it's actually a bit on the cool side here lately. After reading patandchickens big ole ventilation page, I have cut out as much of my walls as possible and replaced them with hardware cloth. The floor is already hardware cloth with pine shavings over it. Then I realized there is no where for the chickens to take cover in inclement weather except the roosts. You can see the coop's progress on my page. It aint pretty but it's functional. I currently have 9 chicks from 12 weeks to 1 week. I doubt I'll keep roosters but then you never know so plan for 9. 2 are LF, 4 are banties and 3 are polish so in between size. What does that make for math's sake, 6 chickens?? I want to replace three walls entirely with hardware cloth and add on an addition to the back of the coop with no windows where the chickens can retreat when we have our afternoon rains. There may be the infrequent day when they'd need to stay cooped up for 8 or more hours if we go off. How big will this addition need to be? I'm really hoping patandchickens will weigh in here but I'm happy to take advice from any and all!!