A week ago, something happened that toppled my head chick, Ester, to bottom and brutalized bottom chick. The usurpers are two Australorps, 6 mos old, that I raised from babies. I introduced them into the flock at 3 months (which was Ester, Butters (a Buff Orpington who has since died) and everything was to be expected (Ester, lead girl, Butters, enforcer) but suddenly the two new girls were on top of Ester, and the order had changed, with the new enforcer charging Ester whenever she saw her. I gave the one Australorp away and while the situation is not quite as horrible, Ester is still sporting new gashes on her comb, ears and some pecks very close to her eyes. I am beside myself. Ester appeared out of the blue four years ago when I was diagnosed with cancer, so she is my heart. Do I just get rid of the last Australorp, Vivienne, or will this sort itself out? And are pecking orders typically challenged like this, or is there something else afoot? Any advice is greatly appreciated.