Are you certain that it was heat related? It sounds like an illness issue to me.They were in the garage in a large brooder with a 250w lamp. I'm not sure of the temps under the lamp in the early morning hours. She was on the cold side for some reason, as far from the lamp as you could get, head tucked under her wing. I'm guessing she got too cold wandering around and it addled her thinking. She was the biggest and best feathered of the 4 and looked in fine health. I moved the food and water close to the lamp and added a space heater to the garage.