Well, my hatch is coming to an end on Day 21.
I had 2 hatch Day 19, 22 hatch Day 20, and 5 hatch today. The 30th chick is hatching right now but no other pips. The last pip (30th chick) was 6 hours ago.
21 eggs left with no cheeping or pips. I quickly candled 1 bantam egg -- couldn't see anything -- and 1 Silkie. The Silkie contained a fully formed baby, but didn't cheep when I tapped it or move. It looks like this Marans may be my last chick.
What didn't hatch: 3 Ameraucanas, 8 Marans, 10 bantam mixes and Silkies
This is a great hatch!