Hi New Jersey! Warren County here! Weren't those hot days fun? Good grief! I like your ideas, might try a few of those next time round. Frozen half filled bottles of water scattered around the run worked pretty good though.I'm in NJ and a couple of weeks ago it was in the high 90s with the same humidity. My girls go from 6 years old to 3 month old chicks. They're coop is an old goat shed (the previous owners had 2) with a large run attached. We have wooded wetlands behind us. I put the older girls out to free range with a waterer filled with ice water and a large bowl of frozen treat cubes(berries and vegetables in ice cubes.) The little ones I kept in the pen, they're not ready to go out by the woods. In side the coop I put a 5 quart stainless steel dog bowl with blocks of ice in it and I had a fan blow across the ice. Chicken air conditioning. I kept this up round the clock for 2.5 days. The big girls would roost at night in their regular spots but the little ones were huddled around the dog dish. I tried my neighbor's baby pool but none of my girls were interested. Neither we her chickens.