I have a 2 year old Barred Rock. One of thirteen. I noticed 9 days ago she didn't come out for treats. She was hiding and looked like she did not feel well so I isolated her. Over the past nine days, she has barely ate. I have managed to get her to eat egg, grapes, soft stuff only, no pellets. She has also been drinking but not a lot of that either. She is lethargic. Her poop is bright green but she is barely eating. She seems to have a sound coming from her occasionally almost like a stomach rumble. When she lays down, she has wheezy breathing. Only when laying down though. She also has been scratching at her nose. I put her on antibiotics 4 days ago but I am seeing no improvement. She isn't getting better or worse but I know she is pretty weak from hardly any food. Please help!!