

I have then under a broody hen and she's been very diligent about sitting on them. Yesterday, knowing that it was day 21, I went out in the morning to check on her. She had some egg shells underneath her but no chicks. There was also an egg kicked out of the nest that was cold to the touch. I removed this egg and cracked it open in the compost pile. Inside there was a recognizable chick so I know that the eggs were fertile and developing.
Is it common for eggs to go this long before hatching?
The only other factor I can think of is that my broody hen has a habit of soiling the nest. She'll poop right on the edge of the nest but doesn't want to move the extra few inches to get the wad of poop out of the nest where it can fall through the wire floor in her broody box. She has her own food, water and grit, and is separated from the rest of the flock. There's plenty of room for her to poop through the wire floor if she gets off the nest but she seems to like pooping in the nest. I'm not sure if that would kill the eggs or not. But the ones that have cracked open recently have had chicks in them.
Any ideas?
Dan