I have a 6 year old hen that a week ago started to wobble when she walked and occasionally stumbled. "Rutherford" eats and drinks normally and her poop is normal. She has gotten progressively worse and I took her to the vet the day before yesterday - at that time she was still able to walk on her own. She tested negative for worms and parasites, and everything else appears normal physically. About a month ago Rutherford experienced sour crop, but I was able to massage her crop and if there was an obstruction it was gone within a couple of days. The vet said her crop appeared to be normal during the physical. The vet ran a white blood count and found it to be high, so she gave her a shot of penicillin prescribed Baytril for 4 days. I have been administering the Baytril for the past 3 days and Rutherford is getting progressively worse. She can not stand at all today, but still eats and drinks normally. The vet made no mention of Marek's, but did mention cancer. I have isolated her from the rest of the flock for the past 3 days, because a few months ago I acquired a young rooster, who is getting quite aggressive and I fear he has stressed Rutherford out, possibly leading to her decline. I've been adding vitamins and electrolytes to her water and she has eaten 2 chopped boiled eggs and some cottage cheese already this morning. Any ideas, suggestions? I can't contact my vet again until Tuesday and I'm so desperate to get my girl feeling better! I raised Rutherford from a chick and she is very tame and of course is part of the family!