I've got about 300 broiler chicks that are now at 30 days of age. It's been warm here these last few days reaching 88F at about 2 PM each day and I can see that the heat takes a toll on the birds. I've lost 3 birds in the last week and I'm sure heat has been a factor. Unfortunately, the shed where the chickens are currently housed is of poor design (a problem that will soon be rectified) and that's not helping matters. I've put two fans in the pen and that has definitely helped. I've also moved about 50 birds to another covered shed to reduce crowding. That too has helped. Making matters worse though is that for the last two days, we've lost power for several hours starting at about 1PM. I'm sure that problem is related to the unusual temps and strains being put on the power grid. The other day I decided I'd try something to see if it'd work to help my birds cool off. I froze water in 1.5 liter and 2 liter soft drink bottles and then laid them on the ground throughout the pen. At first the birds were wary but soon approached the bottles and within minutes were sitting on them, snuggling up against them, and even falling asleep with their breasts pressed against them with their head and neck draped over the bottles. Now, when I enter the pen with the bottles and begin laying them on the ground, the birds mob them! Leaving the pen I can hardly see the bottles because the birds are crowded around them. Hours later they're still snuggling against them and I leave them until they've reached ambient temp. It's a bit of work collecting them, washing them, and then re-freezing them, but I'm 100% certain that it has helped reduce the bird's internal body temperature and probably saved some from the heat. I haven't seen any negative effects yet. Anyone else try something like this?