Hi all. I have an adult hen that I've had since November 24. Today I noticed that she has a slightly runny nose. She's also molting and has a whole batch of new feathers coming in. Nobody else in my small flock is showing any sign of anything. So, good appetite, good activity levels, drinks okay, molting, good poops. Only one chicken with symptoms. Hopefully not any of these horrible things I've been researching. She doesn't fit any symptoms completely. Any suggestions for treatments? I currently am feeding FF and layer crumbles. Everyone ranges from around noon to bedtime on about ½ acre. I have small dogs running around the yard as well. Thank you.