My 1 1/2 year old hen has developed bumps on her comb. They seem to be swollen, kind or raised. At first they started out white, but then they turned black (in the middle mostly). Are these peck marks or something else? She's the top hen, so I'd be surprised if anyone is bullying her. Also, she was limping a few days back, seems okay now, don't know if it is related. I don't know if this is the right forum either, it's not exactly an emergency... Thanks!