I have a group of 30 chicks that I got from Ideal Poultry in Cameron Texas. IT's actually the 2nd run they sent me, as the first round came down with the same disease or something. This 2nd round is doing the exact same thing and I have no clue why. I have totally changed everything with regards to their housing/etc. The only constant is the heat lamp I'm using to keep them warm. But at about 2 weeks, one starts to get sick, then several start to get sick, and now one by one, they're all losing mobility in their feet, to the point that they just roll over on their back and stare at you like they're in a coma, but no ability to voluntarily move. I just don't get it. I'm feeding them the Dumor chick feed from Tractor Supply and water. They were vaccinated for Marecs. I cant seem to find anything to suggest a specific disease or anything. Anyone have a clue?