OK so I have this cute buff that is my favorite. I bought her at a local farmer. the other buffs are growing so well but not her. She stopped eating some days ago and all she will do is stay at the corner and tuck her head in. I have started her on antibiotics and also on probiotics vitamins ect nothing is working. Symptoms started after the first day I let them play in the grass a little bit. she seems to be very cold all the time as she looks to hide under the other chicks. What can I do for her? I am a newbie and I have my heart on this one, she is absolutely the cutest and I just want to help her.