It's not possible to determine cause of death unless you want to pay for a necropsy.
If it were my chick, I would assume it was an individual issue, most likely a genetic abnormality or failure to thrive or shipping stress.
As long as all the other chicks are behaving normally, I think it would be safe to assume whatever killed this chick affected only this chick.
If it were my chick, I would assume it was an individual issue, most likely a genetic abnormality or failure to thrive or shipping stress.
As long as all the other chicks are behaving normally, I think it would be safe to assume whatever killed this chick affected only this chick.