Here we are in an Artic Freeze and I am researching how to deal with chickens and extreme heat! I guess it makes me feel warmer. I've seen some really great ideas on this thread! We do have our coop wired so all we have to do is run an extension cord from our shop. I can plug in a fan this summer. We also will make removable frames with wire so we can leave the access doors open. The only problem is rain. If a storm were to hit, we will be mopping out our coop in the morning! But that's not too big a deal. Since we put plastic corregated panels on top of their pen, they would be drier and maybe cooler out there. I did have a light bulb idea after reading about two liter bottles and milk jugs with ice. Like everyone else whose chicken's free range, we keep water in a few places for our six girls. They have to be cleaned out and refilled a few times a day. I have observed how much they like to sip from our storm downspouts after a rain, while the water is still dripping. I think I will save some milk jugs (we currently recycle them) and hang them from trees, around the yard in their favorite places, and put tiny holes in the bottom of the jugs so they can drip. I've done that in the past over my bird bath, to attract birds with the sound of dripping water. I think the girls would enjoy the sipping and I can refill them several times a day without having to rinse them every time. I am sure they will not stay "clean" forever and will eventually have to be replaced. Also, milk jugs start to decompose and become brittle after outside exposure. Freezing water in a jug, when I know I have to be gone all day, might make the water last a little longer. That can be accomplished over and over if I don't fill the jug all the way and lay it on its side in the freezer so it won't leak.