Ok, we were thinking maybe mareks disease, but im not sure.... one of our black jersey giants can not stand up. She is able to kick her feet, she seems to have great energy but isnt eating or drinking much. It seems that she may have been beaten up a lot a few days ago by other hens that made her loose all the feathers on her neck. Then she was walking funny for two days and got to a point where she just lays on her side, head perked up, unless I pick her up....then she kicks and throws her wings open. We had two other hens die recently but didnt see any of these symptoms, one was the weakest in the coop and the other was the most aggressive in the coop. It seems that she has lost her coordination in just her legs....any thoughts on what it could be?