Hi I'm new here and I have an emergency with my Plymouth rock chicken. she is about 4 years old She seems to have marek's disease because she cant stand and she has fowl pox for about 3 weeks. She has had a mucus buildup in the past three days..she also seems to have scaly leg mites which I'm not sure if that is why she cannot stand.She breaths hard and cannot eat or drink on her own. on her right leg she sits and her left leg she has it sideways back. I've given here water and warm crushed rice. I've started to treat her leg mites with cleaning her legs with warm water and putting vegetable oil followed with vapor rub. please help I'm scared we will loose her.