I have 7 15 week old chicks, one of them is a Golden Comet, this morning she seemed a little quiet and kept herself separate from the rest of the chicks. She started off keeping one eye closed, which she would open if I picked her up. Now both eyes are closed and she is just roosting or laying in the hay. The only other symptom is that her feathers are all puffed up, especially around her neck and head. She has no other symptoms, no wheezing, coughing or discharge. Al the other chicks seem fine. I did just finish a round of meds for cocco... however you spell it, because it's been damp and I had spotted some runny poop. Any ideas?