How big a jail and for how long for aggressive alpha hen?

[McChooky]

I carried and move my hens back and forth here and there at night switching coop to manage the bullying and pecking issue.

At the moment, 1 hen is nervous due to the excessive bullying so she is sleeping in a dog travel box, she seems to improve a lot.

I have not rehouse the bully (rooster mating behaviour) girl as we have been having so much rain and it is a misery for all human and animals alive, so I just leave it as it is so not to disturb the already miserable condition.

Your chickens would benefit greatly from scratching and digging for bugs , sun bathing and being in fresh air on fresh ground. Chicken tunnels and tractors work for those who can't free range. Chickens will fight when crowded esp when in visual sight all day