Moving air and the wading pool works the best for me. We have been 40C+ since June 1st, it is a horrible summer. I have large, shallow plastic containers w/ a brick or 2 in it and keep the water at about 6 inches deep. We are normally at least breezy in Texas, so I haven't needed a fan. Like the others, I ice the drinking water during the hottest time of the day and wet the ground. One thing I do is open up the coops and nest boxes so that the coops don't become an oven. Even if there is dark shade in the coop, it still gets way too hot if it is w/out a good air flow. Oh, I also feed them fruit and raw veges, since I have no green grass left, it is dried out and crunchy. I have stopped giving them scratch also, as it is heavy to digest - the very reason I feed it to them in the winter so they stay warm. OH! be sure to keep the oyster shell available. When they pant they exhale calcium in their breath, and I know that mine eat more oyster shell in the summer than the spring, even when the number of eggs are down.