Today a neighbors dog got loose and tried to eat my chickens. It broke into the run and my three hens ran into their coop. The dog couldn't fit through the door so just stuck her head through. A friend tackled the dog while I brought all of the chickens into my house. We found the dogs owner and when I got back I found out that one of the chickens wasn't standing up or walking around. I looked closer and saw that her eyes were swollen closed. I don't know if the dog hurt her or if she was being bullied by the other chickens or if she's sick. I didn't notice if she was like this before the dog came. I'm really worried about her. Please help!