OK well I'm leaving for the day and since the big girls are starting to lay, we're confining them to the coop and run for a few weeks to ensure they lay in nest boxes and not somewhere hidden on the half acre. I now need to bring down a huge fan to point into the run during these hot days or my birds are going to die. How come one of my girls seems so much more affected by the heat? She seriously has her mouth open HUGE and breathes really fast all day long on the hot days, and everyone else seems to do just fine, with very little panting these days.
Chickens don't sweat. Putting a fan in the run will not make your birds 'cooler'. It has been nasty hot here in Yakima, at or over 100 the last few days. I do nothing different with my flock. Just make sure they have access to water, and shade.