We have some new chicks, (started with 11) less than a week old, we bought from our local tractor supply. One died the first day, shortly after we got it. A second one died this morning. It had a leg that was limp and it couldn't balance. Last night I moved it to its own brooder so it wouldn't get trampled, and thought I'd see how it did over night, and it was dead this morning. Last night all the other chicks seemed to be normal and healthy. Then around noon today, another went all wobbly, and lop sided. It couldn't balance, or stay on its legs. It would just roll over and twitch. I separated it, again, and watched it through the day. For lack of a better way of describing it, it looks like this chick has Parkinson's disease. It's got some sort of muscular palsy. We're going to put her out if her misery, and I'll definitely call the hatchery on Monday. But what on earth do you think could be wrong with my chicks? None of our other rounds of chicks had any problem, other than one ameraucana with a scissor beak. Bedding is pine shavings (not cedar), watering fount and feeders were sterilized before we used them. Theyre on the same chick starter as our other chicks. Water is changed and cleaned several times a day.