I have two to three day old Partridge Chantecler chicks that keep falling on to their backs, and they can't correct themselves. These chicks are from my healthy stock of PC's, and we're hatched in a incubator. Not all of them are doing this. Oddly, it's the ones with the same color patterns. They did this while in the incubator and are still doing it in the brooder box. I find them nearly dead and once I correct the chick they are ok. What could be the problem?
