I have a young about 8 week old lavender bantam orpington. When I went out today to let them out. I saw that she was sleeping with all her feathers puffed up. She has remained lethargic all day. She is eating and drinking. She also has clear, thinnish discharge coming from her nose. Her balance is also a little off, she was stumbling when she was running to the food. I have put her her on chicken vitamins, but what else should i do? IS there any medicine that might make her feel better? Please help! She i my favorite chicken, and I very much love her!