This is a 9 mo. old Easter Egger. Weight??. She is laying in puddles on her side, panting, constantly clucking, and will not move or stand up. We live in Tucson, AZ and it is HOT here (104 today). She has been acting listless since yesterday afternoon, but only truly symptomatic this afternoon. There do not appear to be any signs of trauma. There are 2 other chickens (RIR and Barred Rock) and they are fine; not sure what could have caused this except for the heat. She was eating and drinking earlier today, not sure about the last few hours. Haven't seen her poop recently, either. So far, we have brought her inside (in a box) where it is air conditioned and symptoms have not changed. The only difference is she stopped clucking. She lives in an outdoor coop, open to the air, with lots of shade cloth, fresh water, and regular dousing with water of the shade cloth. There is alfalfa hay for nest bedding. She spends most of the day out in the yard, under trees, drinking and eating from citrus tree wells, etc. We would prefer to treat the condition here at home if possible. Any ideas?