Newly Aggressive Hen

[Mbh236]

I have 4 hens in an enclosure that they’ve been in for almost 2 years and out of no where my smallest Ameraucana hen (who is at the lowest pecking order) has just started attacking my brown leg horn hen, holding her down, pecking her head, and drawing blood. It’s been a few days and she hasn’t stopped. The ameraucana looks like she’s molting on her neck so I thought maybe it was that but my brown leg horn is the only target and she’s being terrorized. Any suggestions?

 

[Tookie]

I'd try separating the bully for a few days, then reintroduce her and see what happens.
You could also get a spray bottle and fill it with water, spray the bully whenever she tries to attack the Leghorn.

 

[Mbh236]

I'd try separating the bully for a few days, then reintroduce her and see what happens.
You could also get a spray bottle and fill it with water, spray the bully whenever she tries to attack the Leghorn.

Thank you!