Update 9 PM
Still close to 90 degrees here but I can report that I did EVERYTHING all of you advised. The baths, pools of water, yogurt, frozen fruit, slow cool, ziplock bags under wings, etc. The downed hen is now up and around, although a bit shaky. One one the Delawares is also shaky but looks a lot better. All have gone to bed, and I have been attempting to get some air flow thru the coop to cool it down and will install a fan tomorrow. Wish I could leave the big outside doors open in addition to the small doors and windows but can't of course due to predators.
I am so grateful for your advice and your quick response to my post. Although I have had my hens for several years now, I have not experienced heat stroke. Quite frightening I must admit. But with your quick responses and your ideas and cool down methods I am convinced saved my downed buff as I took emergency action based on your comments. And I thank you from the bottom of my heart. We all do.
Anne and the girls.