I have a 9 month old hen that quit laying about five weeks ago. She has acted normally outside of that. This morning she was laying under the roosting perches and didn’t come out to free range with the rest of the flock. She is trying but can barely walk and seems extremely weak. She is drinking a lot of water with electrolytes and is eating if we hold it up to her. Can you please help me know where to begin in helping her? The rest of the flock seems fine. It seems to be mostly an issue of her energy and ability to walk.