I have a chick that has a eye that is shut. When I tried opening it to put drops, I noticed it was swollen inside and a little blood started coming out. Should I cull this or is there something that I can do? This is a chick that is with the rest of the flock bc a broody hen hatched it out. I am also in the process of treating my flock with duramycin with a respiratory problem. Sneezing has slacked off, but there is still a few with runny noses...It has only been a couple days that I have had them on the antibiotic.