Help! I live in phoenix where it is hot. I have them in the shade with water and I give them ice pretty regularly. All my chickens (hens) are about 1 1/2 years old. In the last 3 months I have lost 3 of the 6. I'm sure one died from heat but the other two, I'm not sure. Now the last three chickens are "depressed"? Is that possible? They are still laying but when I try to let them out in the yard they don't want to come out, they have decreased their eating amount and barely make any noise. I am sure that one that died was the "boss". How do I know if they all died from heat or if my chickens are at risk for something else? If it was just heat, how to I help my chickens perk back up. I miss there crazy personalities.