I heard of putting frozen water bottles in their water, but just laying them out, I hadn't and you can be sure I'll be doing that this summer! It will be my first summer with chickens, so I'm quite worried as I live in one of the hottest areas in Los Angeles, they always quote our area for the high, LOL.
Sounds like our area. Shoot, I wish I hadn't assumed Wyandottes couldn't handle the heat, 'cause I've always wanted Wyandottes, and scratched them off the list due to heat, LOL. Maybe someday, if they happen to have one at the feed store, I'll take one home for kicks