This morning at 6:30 I turned my chickens out to free range and one would not get down from the roosting bar. I picked her up and put her outside and she went back in and sat down in a corner. Her feathers look good, and her eyes are bright. She did have some watery yellow poop, but no blood was in it so I don't think it's Cocci. It was hot yesterday where I live but feels like fall this morning. What could be wrong?