Leghorn is in bad shape. She's not eating. She just sits there. If I pick her up she throws up. Her comb is flat and not bright red it's more blue. I think she disappeared 2 weeks ago after a dog attack and finally found her way back because I have 3 leghorns now and I thought I was down to 2. I separated her and have washed her butt several times. She seemed better yesterday but today she would not leave the garage. Suggestions? Time to cull?? I always have trouble letting go.