On day 21 I had one chick hatch. Now I hear one egg chirping. It's been chirping since late last night, it is now 1pm the next day. How long can they chirp inside without pipping? I'm so sad to have such a low hatch rate. I don't want to help and do harm but also don't want to let the little one die in the egg. Humidity is 61% and temp 99.3 in a hovabator. Any suggestions????