I live in the UAE (but am an Australian national) and keep a rooster and several hens - mostly for their eggs although sometimes also for meat. They have free range in a walled garden. The weather here is very hot - summer: 50 degrees celsius. My chickens survive despite the fact that the tap water is very, very warm if not hot. I really don't know how to keep them cool; I hose them down daily in summer to cool them down. It would be nice to hear from anyone else living in extreme desert conditions - how do you manage chickens in the summer heat?