This morning I found my 6 month old leg horn lying in the run. The other chickens were stepping on her and she let me walk right up and pick her up. She is very lethargic and will not eat or drink. She appears to just stand and stare. Her comb looks wilted not the vibrant red it should be. We have had some extremely hot days 100+ but I have tried to keep them cool with fans and cool water. Anyone have any idea what might be wrong with her. The other chickens appear to be fine. No evidence of trauma either.