Thanks for the advice on this forum. Our chicks are coming up 8 weeks old. Our first little sick chick died Sunday night - it may have been some congenital problem and she was only half the size of the others. Then Monday morning another chick (Sophie) was hunched and lethargic. I started Corid on Monday evening - even though they were vaccinated, people thought that was the most likely cause at this age. I am not sure there was any blood in stool - there was some red, which looked more like the intestinal lining photos I saw. Anyhow, she refused to be separated so they were all 5 dosed with Corid in their water. Wednesday morning Sophie was worse. I think she was running a fever on Tuesday - felt extra warm whenever I picked her up. Eating and drinking, crop emptying etc, but just lethargic and hunched. However Wed morning her head was tilted to the side, and she seemed too warm So Wednesday morning I started her only on Tylan200 (orally, having her drink 10mg/ml). I got about 20mg into her yesterday. Her fever went away and she continues to eat and drink. But the head tilting is getting worse - her whole neck looks twisted, and she has no balance to walk. Any clues what this could be or what I should do about it? Here's a pic of Sophie with her head twisted. I can't figure out if she can even see out of both eyes. Should I continue with the Corid for the full course? She is now separated from the other chicks - they have all been moved outside and she is inside, so I could stop treating them also? I would continue the Tylan because I think it helped the fever.