bantam chicks died one by one

[axelsujin]

Did chicks have access to grit? If eating anything other then chick feed,they need grit. My first guess would be Coccidiosis. Cocci kills very fast,but is easily controlled using a coccidiostat. 

Yes.the chicks had access to grit..made up of crushed egg shells?was it because of that?the chicks were also constantly eating or pecking at the pine wood shavings..