I have tried just about everything to prevent my chickens from getting sick. In August I lost 4 birds to Infectious Bronchitis. All of which were immediately removed from the coop when they started showing symptoms. No other birds were infected. In early October I purchased 7 new juveniles to put in their own pen away from my older girls and roosters. a partridge silkie, black silkie, jubilee orpington, lavender orpington, buff laced polish, belgium d'uncle, and a silver laced wyandotte. The belgium d'uncle was picked up by what we believe was a hawk. However, a week after settling them in I noticed my black silkie, Oprah, was sneezing uncontrollably and her nose was running everywhere. As soon as I realized this I removed her and put her inside our camper in a rabbit cage. I began administering injectable Tylan 200 twice a day. She was not getting better. So I took her to the vet and he gave me another liquid medicine. She's not any better but she is still very active and has a huge appetite. I refuse to give up on this little girl. Her nose constantly runs to the point where is dries up and I have to peel dried mucous off her nostril. Her eye is also shut because it is also running. I'm not sure what else to do for her. Now it is November and I realized today my Jubilee Orpington has a runny nose! I am confident that he did not catch it from Oprah since she has been secluded in the camper for so long and I have been very cautious about bio security. Does anyone have any idea how my Jubilee could have gotten sick? Or could her runny nose simply be from the weather? I'm from Lancaster Pennsylvania and it's been very cold here for the past few weeks. I'm not sure how to prevent this illness from popping up over and over. It seems like every time I catch a break another pops up with symptoms!