@meetthebubus I purchased birds from a local breeder because of the heat. Her stock has bloodlines from another breeder who had many generations bred here. Beating the heat should be in their blood.
Also, Australorps have big combs. My EE roo had the hardest time with the heat last summer...he has a pea comb.
My Aussie girl still panted, still got hot, but she didn't seem as uncomfortable as the others and typically seemed to stop panting sooner. A short stand in cool water and she was good. She's also the most relaxed bird I've ever seen. Nothing bothers that girl!
There's never a guarantee of course. Too hot is just too hot. I can't afford to put a/c in my coop, it's not designed that way, but I wish I could!