I have a 7 month old Buff Orpington hen who is alive but very lethargic. After I found her lying on her side in the chicken yard I picked her up and checked her for injuries or mites or lice. She is alert, but can't walk.
Any ideas about what could be wrong with her? Does anyone suggest a treatment? I have on hand B-12 and bovi sera. This is the 3rd hen from that bunch of 15 that has gotten sick, the others died.