I have a chick that was sold to me as a Black Australorp. She did look like a black Australorp as a chick, all black, not chipmunk at all. However, just recently her chest feathers have become like a Barnevelder hen. The chest feathers are the only ones doing this so far, so she may molt the other black feathers and have all Barnevelder feathers eventually. She's about 14 weeks old. Is there another breed that this chick may be? Like I said, she didn't look like a Barnevelder at hatch, so I don't think she's full Barnevelder. Could she just be a mutt? Or is there another breed that I haven't thought of? I will try to post pics tomorrow.