Looks like there was a peck but she's obviously molting. (I can see pin feathers growing in.) Tail feathers are often 1st to go so I wouldn't be surprised if she looks worse in a couple days. You will also see that she's more distant from the others while molting.Ok here is Caramel in all her greatness and you can see that she is missing feathers in her tail. I've noticed for a while that her tail was missing a few feathers, and assumed it was another chicken. I thought that was normal to a certain extent. Is there something I can do so she doesn't get so bullied?
Yesterday I noticed a small amount of blood.
A dab of blu-kote works to heal and prevent further pecking.