Long story short, I have 3 out of my 5 chickens with crusty, oozy, bubbly eyes and clearly having difficulty breathing. I've seen one of them vomit. Clearly I have sick chickens. What I'm looking for advise on is what to do. They are separated from the other two, but I'm not going to be surprised if the other two turn out like this too in the next couple days. I sat with each one with a warm towel to get the crust off their eyes. One had an eye completely shut. I've been reading many threads on here....can I really just go to TSC and get antibiotics for a chicken? I know I sound silly......I used to get my vaccinations and penicillin from TSC for my horses.....but chickens?