I have a 8 month old Dark Cornish pullet who is suddenly tilting her head to one side. About a week ago I noticed that her left eye looked strange. The eyeball its self looks fine, but the skin around it was very dry and crusty looking. She was shaking her head a bit, but seemed normal otherwise. She started laying just a couple weeks ago, and hasn't laid an egg for five days now. She was eating/drinking normally and running around with the other chickens until today. This morning I found her standing in the middle of the yard fluffed up and tail drooping. Normally she is kind of hard to catch, but I picked her right up today. Her head is tilting to the left (the side with the eye issue). She can walk fine, but is not very interested in food or water today. I seperated her from the rest of the flock and gave her some ploy-vi-sol vitamins and put electrolytes in her water. I am super concerned about Mareks disease as we have lost two other chicken in the last month. I have not had a necropsy done as I have no idea where to go for that. One of the other chickens had a mass on her wing joint and I just found her dead one morning. The other one had had a host of issues from the time we got her when she was 6 weeks old. She was always small and was picked on by the other chickens. She got very weak and stumbled when she walked. I seperated her and gave her vitamins and oatmeal/egg/yogurt and she seemed to get better. Then about ten days ago I found her laying on her side in the yard. I picked her up, she had a seizure and died in my arms. Does any of this sound like Mareks? I have read a bunch of threads on here about Mareks and wry neck and I am super confused as to what is wrong with my chickens. The other 5 I have outside and the 4 chicks in the garage all seem fine, but so did this bird until today. What do I do?!