So it's weird, my young hens that were just starting to lay, are coughing and sneezing. One is puffy like a infection, so I have her seperarated and gave her some Tylan. The others have no other symptoms but aren't laying now. My older hens are the only ones still laying and show no signs of illness. I have been treating with vetrx, can I feed a medicated feed? And has anyone else been having this issue? The weather here has been super humid, then it gets cold at night. If that may be a factor?