Back in August I ordered 2 Buff Silkies from Ideal, along with several other chicks. All are doing great. I believe the 2 Buffs are cockerels though. Now my question is ... one of them has a little poof on top of his head and the other has nothing on top. Will he eventually get a top knot or is this a genetic thing and will it never grow in ? Here is a photo, hope it works.