I live in Perth Western Australia. It is a temperate climate and never gets really cold (no snow or frost) but can get quite hot in summer. We are designing a new coop (long story...one chick is a rooseter, found someone to take both together, got chicken math disease so now plan to get 4 more) I'm wondering if they really need a closed in coop. As long as they are safe from predators what else do they need? Nest boxes, somewhere to roost, shelter from rain...or do they need a closed in space? Can anyone direct me to some picture or designs of coops with open sides/ventilation?