You’ll only know this by watching them. That’s the fun part!
Chickens communicate with subtle clicks and clucks. Sometimes they get along just fine without much drama a little peck here and there.
I feel the flock does well if they all start off as chicks together. Easy
My older hen was a brat..bossy! plucked a few feathers nothing truly harmful when I got new chickens this spring (31/2 months old upon introductions)
She actually was very good with them.
It’s exciting to get chickens and your in the right place to get started. Best wishes