I'm in Central Florida and while it does "generally" cool off in the evening after the sea breeze storms in the summer, last summer just seemed so STAINKIN hot all the way up to November. I know I walk outside and just pour sweat. I'm concerned about a coop that we lock up at night, but what about ventilation enough so they don't get cooked in their coop?!?!?! I have to lock up, no option. A Great Horned Owl moved in last winter and now the babies are here too. Gets rid of the snakes and squirrels though so I don't mind them. We're also loaded with Ospreys this year. What do you do to keep them comfortable if you have to lock up?