I am a new mom of what was 5 chicks 4 weeks old. They were all doing fine until last evening when I changed out their shavings in the temp. Housing I have them in untill we finish their house and digs. It is shaded and seems o.k.for now. The other four seem to be doing o.k. but this one just was struggling to breath and laying lifeless on her side. It was a humid hot day here(Wichita) so I am thinking maybe the heat got her. We tried cooling her with water but she could not be cooled so we ended her suffering. What do you all think?