I'm in East Texas and the heat & humidity get pretty high here. I also have an open air pen. All hardware cloth for the walls & tin for the roof. It's 10 degrees cooler in the barn than it is out in the yard. I make sure they have plenty of fresh water and I keep the buckets in the shade. I have box fans attached to the doors of the coops. They are turned on when the days hit 90 degrees or more. I give them frozen watermelon & cantaloupe rinds for treats. Put out shallow pails of water for them to wade in.
Since you moved in April, it should give your chickens time to acclimate to the difference in temperatures. I don't know what kind of coop you have, but if possible, open up any windows or doors to let as much air in as you can.
I like aart's idea about using the Sav-a-Chik solution. It might be a good idea to keep some on hand to use or in case you need it for an emergency.
Since you moved in April, it should give your chickens time to acclimate to the difference in temperatures. I don't know what kind of coop you have, but if possible, open up any windows or doors to let as much air in as you can.
I like aart's idea about using the Sav-a-Chik solution. It might be a good idea to keep some on hand to use or in case you need it for an emergency.