The answer (to how many went in the coop on their own tonight):
Mom. She probably remembers well living in a wooden box, and is right at home.
Chick roundup night two went better, the last Silkie chick (different one) left running around found its own way in quite rapidly.
All the Chanticleers were piled in the cardboard broody box with “their” mom, who’s trying to work on the next batch. They aren’t so sure about this coop business.