Same thing happened with one of our girls last year. We affectionately called ours "poopy butt". When it got bad we'd turn her upside down and trim it off with scissors. This is a 2 person job, though.
We also fed her yogurt mixed with her pellets. She loved it and helped regulate her...
Back in the summer our BO went broody so we acquired some fertilized eggs for her to hatch out. We ended up with 2 baby black sexlinks. When they were little all was fine, but now that they are getting older (12 weeks) I'm noticing some pecking order issues which I know will resolve sooner or...