Feather picking?

[The chicken nurd]

I’m not sure if this is just my hens picking at each other or if it’s something more what do you guys think
Also I just noticed it in the last couple weeks except on the hen in the last picture who has been missing some feathers since I got her a few months ago

 

[AidKD]

Have you checked them over for mites and lice? Do you have a rooster?

 

[The chicken nurd]

Have you checked them over for mites and lice? Do you have a rooster?

no mites that I could see and I don’t have a rooster