I purchased eight chickens that were about 8-9 wks old. They were kept in a storage shed that is ventilated with windows. We kept them on a hay floor with heat lamp. We lost three inside that I thought just were too small and got too cold so we added heaters as well. When it warmed up we put the rest outside. We have lost all but one now. The ones outside look like they lose sight in at least one eye if not both. The eyes may have a little puss but basically the eyelid is swollen shut. They stop eating and drinking and won't move from one spot. I chalked it up to the fact that we bought them at an auction and probably were not cared for properly. Now one of my hens in a different chicken coop is looking the same way. Does anyone know what this is or what I can do. I have isolated the hen but she is not looking good. Please Help!!