When I went to check on the hens yesterday, one of my younger pullets (not laying yet, but close) was being pecked bloody on her back by the other hens. She was just sitting there, letting them do it. I immediately brought her inside to assess her and try and figure out what was going on. Here are her symptoms. Obvious congestion? She is rumbling loudly with every breath. Slight nasal discharge Off balance - she can stand, but holds up her right leg and extends her right wing for balance Normal droppings Eating and Drinking normally She was vaccinated for Marek's as a chick by the lady I got her from. She is getting her normal crumbles and water with electrolytes, vitamins. I've also given her a source of heat. What do you all suggest? This hen seemed fine just a couple of days ago.