I have had my wee flock of 10 for just a half a week, but one of my Black Stars sneezed when I was sitting in the coop watching them and handling them. I singled her out, snatched her up gently, and inspected her. She had a slight (very very, similar to a human being not during allergy season) build-up (a granule or two) of yellow colored discharge around her right eye, and both nares were exuding a mild amount of clear liquid, which appeared to dry to a white/gold consistency. Her sneeze was a bit congested sounding, and resulted in more of this watery liquid coming from her nares. No other chickens seem to have this symptom. Should I boot her? Is it too late to boot her? Will they all die? Will they all be "carriers for life" of something? If they do all die, do I simply soak the entire place in bleach and then hose the hell out of it, wait 2 weeks, and find more, or what? Possibly over-reacting, but maybe not :/ ?