Add some ice to the water to help cool it off for them, too. One of the AZ. Ladies held a thermometer by the surface of one of her water stations that was in the shade yesterday and it read 102 degrees. So if ice would not have been added, her chickens would have been basically drinking hot water in the heat.The Chicks are doing great outside and seem to be handling the heat well so far. We have only lost one chick, and that was after being caught by one of the dogs. The chick found a hole in or run and escaped. The dog found her and wanted to play. He ended up braking her hip, so we put her down.
On the other hand, we did lose one of our older girls on the 4th, and two others don't seem to be handling the heat very well. All of the struggling pullets are Production Reds, so I think they are not very heat hardy. Hopefully they make it through alright. We already have the giant shade cloth over the entire side yard, open air coops, and a misting system. We have doubled the misting and give them watermelon a couple times a week. We also added more watering stations (beyond the auto watering systems we already had).