I have a 4-5 yr old Buff Orp that is reluctant to walk, and when she does, she uses her wings and also while lowering herself. Her appetite is fine, and her poo is normal. I have checked her ears and I see no sign of infection. Her diet has not changed - layer crumbles, scratch, a bit of bread. She first showed signs on Monday. Her condition has not improved nor gotten worse. None of the others are showing any signs. Does anyone have any experience with similar symptoms or have any suggestions? We do not have a chicken vet in the area.