SOOOO Upset! I have diagnosed my hens myself. I think they have Coryza. This is terrible. Has anyone had 1st hand expeience with this?? I have read everything I can find. Hopefully I am on the right track. I have quartined all the ones that are showing symptoms. I have given them shots of LA 200 anitbiotic. I am using oxine in their water and hoping for the best. Their eyes are doing better, but they still have the cold symptoms. I hope they are not a forever carrier. I would like to add to my flock again in the spring but I am afraid of running the risk of mine getting the new chicks sick. All of this because my daughter brought home a bird that was sick. Not knowing of course. Accidents happen but it still doesn't make me feel any better. I run the risk of losing all of them. I appreciate any advice you amy have for me.