Help! Chickens getting feathers ripped out BADLY!

[We love chooks]

Hi Everyone,
Lately I have been having some problems in the coop.
A couple of my Plymouth rock hens are getting their feathers ripped out and at first, I thought it was the rooster so I took him away from the hens.
However, as days went by the same hens were getting more feathers ripped out.
I am now starting to wonder if it is the hen that has no feathers ripped out (the first image of the Australorp) is pecking on the other hens.
Would she even do that?

 

[Predoggg]

I hope someone has an answer. I see it on my hens too but I also see the rooster is mating with the specific hens a lot. Their missing feathers are not that bad and most of the time the spots are gone.
I will be following.

 

[nuthatched]

How big is the coop and run, for jowls many birds?
What's their diet?

 

[dawg53]

Pinless peepers will put a stop to picking and pecking. You can go to Ebay and order them, buy the pliers also.
https://www.ebay.com/itm/225832802121?chn=ps&_trkparms=ispr=1&amdata=enc:1ML9cRgCQS2uTR6bC9OLtbA84&norover=1&mkevt=1&mkrid=711-213727-13078-0&mkcid=2&itemid=225832802121&targetid=4581046492584080&device=c&mktype=&googleloc=&poi=&campaignid=603247544&mkgroupid=1239150598504493&rlsatarget=pla-4581046492584080&abcId=9316119&merchantid=51291&msclkid=dacd95168813126f535ef08b6b6f650d

 

[SmiYa0126]

Looks like mounting feather loss to me, probably from your rooster.

 

[We love chooks]

My coop would be about 10m x 7m.
Every Afternoon they get let out to peck around on the farm for 1-2 hours.
Their diet is champion layer pellets which are available 24/7.
They get scraps a couple of times a week and mill worms and wheat a couple of times a week.

 

[We love chooks]

There are six hens in the coop.
Some younger than others.