We bought some hatching eggs here on byc and from ebay. The youngest are 3 days old. One of the 7 from that purchase has a swollen shut eye. Everything else looks normal. No smell. No other chicks show any sign of disease or illness. They range in age from 12 days to 3 days. I don't have a photo right now, but there are a few here on byc on older birds, that were confirmed to have coryza. Is it possible to have them hatch with the disease? If we cull or quarantine now, are the other 27 chicks already exposed and do we need to quarantine them as well from our other birds and upcoming hatched chicks? We just noticed the condition today. Don't think it was like that yesterday.