I had three eggs hatch yesterday morning (and one that pipped and died shortly after). There are 12 more in the incubator, and some had internally pipped yesterday morning.. but still have not pipped externally. I can hear them peeping and pecking still, and the eggs move around. I know you're not really supposed to help, but I read online that after 12 hrs you should out a hole in the air cell end of the egg for them so they don't die of exhaustion, so I thought I'd try. The eggs are REALLY hard -- seriously, little taps would not do. By the time I finally was able to break two of the eggs, these were not "little" holes. So, these two have been in a partially broken egg since lastnight, and the membrane is still intact and bled a little on one of them so I can't help them further, but they seem happy to hang out, still peeping and occasionally trying to stretch as if they want out. So now I am reluctant to help the remaining eggs, since the membrane was still intact in one of the other ones... But how long do I wait? It is 24 hrs since some of them started internally pipping. Temp is between 99.7-100 degrees and humidity is 74-77%. Thanks in advance.This is our first successful hatch and the three chicks that have hatched are doing really well.