I live in central Texas and it’s summertime, which means it’s extremely hot and humid. My chicks are three weeks old and starting to go in their run during the day to run around and get used to it. However today I put them out at 2-3 and they immediately started to pant with their beaks open. I put a large fan in front of them and got them multiple ways to access cool water. I also have a dust bath for them. And their entire run is always shaded. I was so uncomfortable watching them pant I finally brought them back inside. Is this normal and/or dangerous to them?