I have 5 red star hens hatched about easter. The biggest one got sick 3 days ago. First she stayed in the henhouse and wouldn't forage in the yard with the others. Yesterday she ate and drank but spent most of the day sitting and sleeping in the shade. Today she can't move, eat or drink. She has good breathing, no poop to anaylis or any fluid from her nose and looks good. Being only 15 weeks I don't believe it could be an egg blockage problem. Her neck and abdomen seems normal with no swelling. They eat layer crumbles, treat worms and forage in a florida yard. They love wild bananas..Any ideas?