I have a little lavender orphington that's about 9 weeks. She has struggled since she was about a week old and I'm still not sure what is wrong. She started to act sick around 1 week, eyes closed, squinting, and sleepy but no other symptoms, no drainage, nothing. I treated my flock with corid, just in case it was cocci but she didn't get better. My daughter noticed she had lice, so we treated the flock which was pretty easy. She didn't get better. We separated her because she started to get picked on. She was also not growing at all. Tried nutridrench, poly vi sol, eggs, mealworms, she wasn't getting better or worse really, but she obviously wasn't good. I got some tylan from TSC and gave it to her orally and like magic she showed great improvement with the first dose. I gave it to her twice a day for 10 days because her eyes still seemed the tiniest bit squinty. For about two weeks she's been great, she's growing, slowly but growing, and she's perky and normal, that is until today. Now she is seeming sleepy again and keeping her eyes closed more than normal. Ugh. I'm nervous about giving her tylan again but coming here for advice on if anyone thinks I should, I don't want to over do it and cause more harm than good but she did pretty much a complete 180 with it previously so maybe I just didn't do it long enough? Any advice would be greatly appreciated!