Is this normal or an injury from pecking?

[Chickmamajessica]

I’m a newbie chicken owner and have 8 chickens total. Is this normal for brahmas to be featherless here or is this from a pecking injury? All three brahma pullets have no feathers in the exact location. They are just over 6 weeks old.

Any info would be appreciated.

 

[Chickmamajessica]

Update: as I’m reading more about brahmas I have learned they are slow to feather out and can show bald spots (particularly at the shoulders or back). I saw them with bald shoulders a few weeks ago and now it seems they are just balding on their back to get ready for more feathers.