OK, Tucson chicken peeps, advice needed!
The chicken run I have been building is done. 650 sq. ft, 75% shade cloth over most of the roof and along the long east wall. Partial shade from roof overhangs on my wood shop. Ground covered with compost and seeded with BOSS, buckwheat, and Bermuda grass. Watered in morning and early afternoon. Perimeter wired with electric fence. 5 oldest chicks already moved in.
Due to desertmarcy's recent loss, I am kind of undecided about cooling methods. I was planning on a portable swamp cooler set up in one corner of the run. The other option is a misting system. The swamp cooler has the advantages of better cooling, and most of the portables have a timer already built in. Misters are cheaper, but I think less effective in a no wind situation, and setting up a timer for it can be a pain. I work nights, so with either option, a timer is a must.
I know the chickens don't particularly like wind or water, but they probably like heatstroke or death even less.
How do all you peeps handle the heat?