One of my 2 yr old rhode island red is very sick. I noticed her comb was flopped over and pale about 2 weeks ago and she wasn't herself. I dewormed all 6 of them. Her comb seemed less pale but still wouldn't stand up. Today she was laying in the run on her side. She ate a little when I put it in front of but couldn't stand up..even when the other hens stepped on her. I brought her inside. She can't keep her eyes open for more than a few seconds. Her crop is full and seems hard. What should I do? Please help! I don't think she has much time.