This just started this morning. He came out of the coop this morning and stood around in one place for five or so minutes looking a little foggy. I was working right there by him and he stayed put. He shook his head vigorously and almost tipped over. A few minutes later I saw him a few yards further away and he stood there for probably ten minutes. At his next move, he shot out total water. All the chickens have been on antibiotics for one week because of a hen with a respiratory infection. She is doing much better but still in isolation. Rooster isn't having any breathing problems. Last week I totally stripped the coop (deep litter method), swept it down, replaced nesting materials and let it air all day while the birds were out. What's going on? I definitely feel like I'm doing something wrong. Also, I dewormed in late fall.