reintroducing hens back to the flock

[alexkrass]

when can you reintroduce a bullied hen back to the flock?

 

[TheTwoRoos]

Whenever she is healed up.

 

[aart]

when can you reintroduce a bullied hen back to the flock?

It's not so much when...as how...and why.
Your question is too simple to give an answer.
Figuring out why she was bullied and fixing that problem,
then learning about how to proceed with re-integration is what's needed here.

More info on your flock, coop/run and details of the bullying event(s) are needed.


ETA: Ah, more info(kinda) here: https://www.backyardchickens.com/t/1076350/bullied-hen