Many people don’t realize that buying chickens from auctions or really any public sale is risky because some people don’t know or care much about diseases. They just try to make money off raising them. In fact, I don’t recommend getting chicks from anywhere except a hatchery or a decent feed store that doesn’t allow people to touch the chicks. Recently I was reading a local ad on Facebook locally, and someone had a bunch of chickens for sale. The rooster had obvious ocular Mareks disease, just from his pinpoint irregular shaped pupil. I hope that your flock stays healthy, but we are here to help.