It's like they sense the others rhythm maybe it's a surival instinct. More in a group the better the chances of surviving an attack. Just thinking out loud here.
So technically you can join Springing in the chicks hatch along. I think.
Yeah, that must be why. Also I've noticed they almost always lay eggs on the full moon, but this time they didn't
Am thinking of joining that hatch a-long but right now everything is completely crazy here so I don't have much time to be on BYC.