That's what I'm finding out....not a trait I favor. I like an even tempered bird somewhere in the middle of that. I guess that's why I lean towards the WRs..they are just such birds, as are the BAs, and NHs I've had. Just normal birds with normal social tendencies. I cherish peace so much in my own life that it's silently crept into my flock management goals over the years and it was just in the past few years I recognized what I was going...building a peaceful flock over all these years. I never have had one hen pick feathers from another nor inflict a wound on another in all these many years and when I read about it on this forum I'm always appalled at the stories....then I remember why I've never had to deal with anything like that. I don't suffer bullies or wimps in my flocks...just regular, normal chickens.
I've been assured this is possible with any breed ... and if I want "nice" EE roosters, for example, I could "select for that." Trouble is, the EE cockerels are SO obnoxious they don't make it to the rooster stage.
Our flock was SO miserable this summer when last spring's cockerels were coming of age ... mixed breed mutts and probably some of them would have been fine birds ... but 20+ of them terrorizing everyone was not working ... The peace that appeared when they were finally processed was beautiful. Absolutely beautiful. Everyone is so much healthier now.
It was a great demonstration for TPTB about how "stress" affects a flock. But I'm sorry it took that kind of lesson at all. It wasn't necessary.