Hi, I am new to backyard chickens. I have 6 chicks. Mixed breeds. All are 5 weeks old. I purchased them from Rural King. The one I am concerned about is 5 wks old. Not sure exactly what the breed is. ***'t Arac is what the sign said for the breed. I also have ISA BROWNS, silver laced and buff Orpington. The other 5 are acting normal and avoid the ***'t Arac now. She has been showing the same symptoms for 24 hrs now. She doesn't raise her head much. When she does she looks up side ways. She keeps her head tucked underneath her breast. She picks at herself quite a bit as if she is over grooming herself or itching. When she has her head tucked she tries to walk but ends up doing a front flip completely. She is stumbling at times. She is drinking and eating and defecating. No sign of blood or non normal stools. They all are still in a brood in my basement. I use a corn cob bedding that is changed completely every two days. I have a gal water changed twice a day and the regular feed trough for chicks. I feed them chick starter medicated. I occasionally in the past two weeks give them eggs shells, grass and a few worms but only a few times over the last two weeks. I don't know what is wrong. I don't know what to do for her. If you recommend something please be sure to tell me where I can purchase it. I don't know if she's in pain or if I should put her down or try something. I'll try to post a pic in daylight hours. I will be moving them to their new coop we just completed today. Thank you. Misty