Thank you for responding so quickly. After you suggested Marek's I looked it up. Univ of Maryland Extension has a great Fact Sheet (FS-1007) explaining Marek's. Quite certain it is the Neural Marek's. Love the sling seat for chickens. Slick.
Please help. We have five chickens that are about 2 3/4 years old. One of them cannot stand or walk. It's keel is protruding and she has trouble eating and drinking, she mostly has trouble drinking though. She will only eat her food if it is soaked in water first. One of her legs is pulled back...