I was tired when I formed my question it seems that I didn't get it across right I wasn't questioning the legitimacy of the heat tolerance,or anyone opinion I was literally wondering what those with experience with them noticed that you think help them if anyone had an observation on that
As far as a/c goes I think everyone's opinion that I've read so far has been correct, it's ultimately a choice how I do it is in the hottest months during the peak heat of day light a/c goes on that allows them to experience 115 day heat as 100 it is important that if you keep it cool and then they go out into the heat they can experience a shock so personally I allow them to tough out the heat in the mornings and evenings with shade and ice and misting, and gradually let the heat return by turning off the a/ç as the sun goes down and they free range once more. I personally feel that with the soaring Temps, you are more likely to lose hens without a careful a/c plan from may until mid September is my a/c months and it gets turned on once 105 degrees is reached and off a few hours later
Also chickens lose heat through their legs/feet so cool water puddles where they can stand in and coat their feet with mud is a fave with my girls this past summer