I think I know the answer to this question already, but my conscience need confirmation. Like an idiot I picked up a few pullets from a flea market this weekend. I was so excited about the new birds I did not take my time examining them deeply. I got them home and into the coop and began to notice over the next couple days how rough a couple of them looked. Sneezing, mucus, bubbling eye, and that awful smell! Anyway I culled the two with visible signs, but that leaves me with one that appears to be fine. I am doing it right this time and just ordered some very nice hi-line brown pullets. These will be coming from a clean commercial breeder. My question is, what should I do with the lone survivor from the flea market. Common sense tells me to cull, disinfect the coop and start from scratch. Is this a safest course of action?