I am brand new to all this so was wondering how hot is too hot for Cornish X's? I want to be ready when and if the warm weather ever arrives to SE Idaho!!! I currently have 20 that are 4 weeks and will be getting 40 more the end of June and now I'm worried about them getting too hot. I read about the ice water and ice bottles and will use that method if needed but was just wondering on the temp. TIA!!!