Somehow the hen has nestled around until when her chicks starting hatching they are in a very wide hole. Without protection, they are high risk for getting smashed by an overprotective mom.
I like to add extra plastic eggs as they hatch for protection and it offer support for the chicks to lean on when they raise their heads to beg.
Note the dark blue egg on the left. Sure to hatch but look a half of shell has attached to it. Luckily it was the bottom end opposite the air sack end and I quickly removed the extra shell cap. The chick in the foreground looks like it will be crested.