One of or ten babies, who is 4 or 5 weeks old has what sounds exactly like crazy chick disease. We went out and immediately got probiotics and electrolytes with vitamins. Trying to get as much as that in her as we can. She seems to still be eating? But she looks so poorly. Her head will go down under her and she walks backwards. Sometimes it almost looks like a seizure. We did separate her in case it was something infectious and so she doesn't get trampled. What more can I do for her? All we have around here are Petco, Pet Smart, and Tractor Supply.