About 2 weeks ago, my 2 EEs had their vents pecked bloody by my other 2 girls. I separated them, gave them an epsom salt bath and put pick no more on their bottoms. I built a backup coop and divided the run so that they could be outside while they healed.
I gave them all extra protein and oyster shell and I throw in a little scratch and timothy hay/cucumber/berries etc here and there. I gave them a treat bottle with holes in it to play with, but they don't care about it.
The EEs are looking almost completely healed and they both started laying just recently. I want to try and get them back into the big coop, but I'm worried that the other two, who were the top two, will just injure them again. They can all see each other all day, so I know they are still used to each other. They can kind of reach each other because the garden fencing I separated the run with has 2 inch square holes and it looks like the top two have pulled a few of the EE's feathers through. Advice?