So as some of you might remember, i had a hen abandon her nest early. Had no bator or a clue what to do or if any egg stood a chance. I rigged up something and put them in.Only a few eggs are still alive. Threw out ones that stunk. Tomorrow is 21days from initial sit. Just heard some chirping. No cracks though but a few chirps. Not gonna mess with them but any advice or signs of trouble to look for. Like how long they can chirp before cracking starts. This was a messed up situation from day 1. So i would like to have some idea of what is ahead. Thanks again everyone. I appreciate you taking the time to help me.