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?
Is she eating and drinking? Do you hear any wheezing, gurgling, or sneezing? If she doesn't look any better soon, I would treat her for Coccidiosis. Only a few of the nine types of Coccidia cause bloody droppings, so that is not a sure sign. However, droopiness (especially in young birds, and combined with lack of appetite), is a sign. Corid is the best medication to use. It comes in a powdered and a liquid form. The Corid liquid dosage is 1/2 teaspoon liquid per quart of drinking water, and the powder dosage is 1/2-3/4 teaspoon powder per gallon of drinking water. Change the water daily, and continue for 5-7 days. Also, if your bird isn't eating/drinking, entice her by giving her foods she likes, or find another way to give her nourishment (tube feeding, etc.).