A few months ago one of our bantam chickens came back from her travels with some sort of injury to her lower back/ tail. Her tail feathers were non-existent, just dragging along the ground behind her. We didnt take her to the vet, assuming she would get better over time, but she didnt, and now she can barely walk, her eyes have dulled and she has a lump on her back with cuts as the other hens have been bullying her. She cant walk around easily at all and we have been mostly hand feeding her. She cant stand up straight and she looks drunk and all leaned over forward. Her legs splay out when she stops and she has trouble keeping them under her. I think shes going to die, but perhaps we should take her out of her misery? Help!!!