i don't know why but 9 times out of 10 if something is wrong with a chick they eventually die.. we have tried to medicate sick ones in the past and never had any luck to speak of. it's kinda strange, they seem to do better if you just give them some sugar water if they are sick and let them go.. however, usually if they are ill at hatch they just don't make it... i am no expert! but have hatched alot of chickens.. it certainly can't hurt to try!