Keeping chickens and dealing with unusual problems that arise requires the diligent cultivation of your imagination. My imagination serves me fine but will only carry others just so far when I write an article trying to help.
You may not have room in your run to temporarily fence off one corner, but you might be able to find a corner in the coop for it. Or perhaps you've been meaning to expand your run and just need some motivation. This is a good time to take a look at your setup and think about pushing out a fence to make 100 more square feet of space to make your flock happier. In a pinch, a dog crate large enough for the bully victim to stand up in can serve as a safe refuge during bully victim treatment. It only needs to be used during the day as the victim will roost with the others at night.
You may not have room in your run to temporarily fence off one corner, but you might be able to find a corner in the coop for it. Or perhaps you've been meaning to expand your run and just need some motivation. This is a good time to take a look at your setup and think about pushing out a fence to make 100 more square feet of space to make your flock happier. In a pinch, a dog crate large enough for the bully victim to stand up in can serve as a safe refuge during bully victim treatment. It only needs to be used during the day as the victim will roost with the others at night.