Are you sure all the chicks are picking on the EE chick? Have you watched the dynamics to see what actually takes place?
As a rule, it's one chick that's the ring leader, the bully, the problem. If it's more than one, it still needs to be determined which ones.
Hopefully, you'll have only one, but if you can identify at least one chick that isn't picking on the EE, that's the chick you want to put with the EE chick in her isolation ward. That will help establish a bond between the two, and this serves to bolster the self confidence of the picked on chick, reducing the likelihood of future victimhood.
After the EE heals and finds her self confidence, you can return the two of them to the others. But meanwhile, watch the bully picker(s). If the pecking keeps up, administer a quick poke with a finger or two fingers tightly together on the back of the bully. Do this each time you see the bad behavior. The results of this discipline are best when chicks are in their first week or two, but hopefully yours aren't too old for it to work.
As a rule, it's one chick that's the ring leader, the bully, the problem. If it's more than one, it still needs to be determined which ones.
Hopefully, you'll have only one, but if you can identify at least one chick that isn't picking on the EE, that's the chick you want to put with the EE chick in her isolation ward. That will help establish a bond between the two, and this serves to bolster the self confidence of the picked on chick, reducing the likelihood of future victimhood.
After the EE heals and finds her self confidence, you can return the two of them to the others. But meanwhile, watch the bully picker(s). If the pecking keeps up, administer a quick poke with a finger or two fingers tightly together on the back of the bully. Do this each time you see the bad behavior. The results of this discipline are best when chicks are in their first week or two, but hopefully yours aren't too old for it to work.