Have 5 baby chicks. My first sucessful hatch. First chick out by himself. Next piped shell and it took 12 hours to hatch. The other three had large piped holes for 24 hours but seemed to have quit trying. I raised humidity to 65 %, but think it was too late. I pulled most of the shell away but left enough for them to struggle a bit. Finally all three broke free from their shells. They were soooooo tiny, and it took a long time before they could even stand. The shell membrane had dried and stuck to their feathers. They seem to be fine now.Thank everone who offered a helping hand.