Oh dear..
I use a flashlight.....
And yes, pitch dark is best - if they can see - they can go. Some will fly when you go to grab them - but if they can't see to go any further they will freeze where they land. Its an art keeping the light away from where they can see to run - and to where you can see to catch them...
I would go round them up while its dark tonight if you can find them - hopefully they went back to the nest box. If not - tomorrow works.
I would try to move the teenagers away from the big group because the roosters can hurt the teenage girls before they get big enough to hop on when they are getting close to point of lay. We did have one girl who got her back broken by too heavy of a rooster jumping on her. She survived - but always walked funny after that. Now we separate them until they are big enough for the roosters.
Leaving one of the mommas in with the littles will keep the teenage roosters in check too - that's why I would put the mommas in with the youngsters.