Bullying? Or pecking order?

[coledabomb]

So we had 4 hens before and we wanted some ones that already started laying so we went to a feed store that was selling them (didn’t know age or breed) and we got 2 laying hens all we know is that there bantams and there laying. From the start I didn’t know you were supposed to quarantine them before you introduce them to the flock so I just put them together and everything seemed fine my hens aren’t aggressive at all so when I put them in the coop together the older hen pretended to peck at my Easter egger and she got scared and ran off. Well 2 day later I put them in the hen house for the night and the older one was pecking at the other laying hen on the neck multiple times where she was already baldish and the younger one was just laying next to her with her head and tail down not moving I kept them apart till it was darker so they could just sleep it off. Next morning I let them out and the younger ones comb was bleeding the others get an obvious pecking order peck to show them who’s boss (the new ones are WAY smaller than all 4 of the others and peck every single one except my Cornish cross ) so my question is is this just the pecking order because they were already together when we got them? Oh also the hen slept with the roosters (separated) in a cage one night because she wouldn’t stop pecking and the next day she’s doing the pre-mate shuffle what is happening you guys

 

[aart]

How old, in weeks or months, are all these birds?
How many birds total?
How big is coop and run, in feet by feet?

Here's some tips about......
Integration Basics:
It's all about territory and resources(space/food/water).
Existing birds will almost always attack new ones to defend their resources.
Understanding chicken behaviors is essential to integrating new birds into your flock.

Confine new birds within sight but physically segregated from older/existing birds for several weeks, so they can see and get used to each other but not physically interact.

In adjacent runs, spread scratch grains along the dividing mesh, best if mesh is just big enough for birds to stick their head thru, so they get used to eating together.

The more space, the better. Birds will peck to establish dominance, the pecked bird needs space to get away. As long as there's no copious blood drawn and/or new bird is not trapped/pinned down and beaten unmercilessly, let them work it out. Every time you interfere or remove new birds, they'll have to start the pecking order thing all over again.

Multiple feed/water stations. Dominance issues are most often carried out over sustenance, more stations lessens the frequency of that issue.

Places for the new birds to hide 'out of line of sight'(but not a dead end trap) and/or up and away from any bully birds. Roosts, pallets or boards leaned up against walls or up on concrete blocks, old chairs tables, branches, logs, stumps out in the run can really help. Lots of diversion and places to 'hide' instead of bare wide open run.
Good ideas for hiding places:
https://www.backyardchickens.com/threads/a-cluttered-run.1323792/