Hi, I am new to this site and joined today. I live in Arizona and have three cats and six chickens. Three french cuckoo Marans, a Barred Rock, an Ameraucana (which may be an Easter Egger) and a Rhode Island Red, which we think may be a Ruben not a Ruby! The main problem here is keeping the chickens cool so any handy tips would be welcome.
Hens go broody when you don’t want them to… and won’t go broody when you do. 

and Welcome To BYC! You've gotten some good suggestions/links above on keeping them cool, good luck with your flock!