Noticed strange chicken behavior yesterday evening and she was rather easy to capture. It was quite hot yesterday... the chickens drank about 2 gallons of water. the tractor is in the shade of the tree, the run is fully covered and when free ranging there are several shady places where they hang out in the yard. After checking her over we moved her to the bathroom, set her up real nice and put a fan in there to keep her cool... All chickens save this one are acting normal. This one only drinks when I dip her beak in the water. Her BM's are normal. She did not lay today. It looked as though she passed a broken egg last night. Nose and eyes are clear, evades capture to the best of her ability. is able to walk and run with a limp. What could be wrong with her, and what if anything can I do to help her?