Hi, So I was dusting all of my 8wk old chicks, and I noticed one has these little tumor-like lumps on her neck. The largest is right on the back of her neck, about the size of a pinto bean. After finding that one, I looked at her all over and found 3 or 4 more smaller (BB to pea-sized), mostly on her neck and one on her back. They appear to be just in the skin, move freely and don't seem to be attached to the underlying tissue. Of course this is my only blue pullet, so she is my favorite. She has no other symptoms. Bright eyes, normal poo, eating and drinking, active, not limping. As far as I know, she was not vaccinated for anything(including mareks). Any thoughts?