2 month old non silkie chick with black comb

[dadsdeercamp]

i hached some eggs from my bared rock hen game cross roo and one is all black feet legs comb it looks like a crow there is no silkie blood in any of my birds where did the black comb come from? any ideas at all would be great. i cant get my phone to post any pics.but the comb is true black

 

[Bleenie]

I hope someone answers, I have a little bantyX hen with a black comb too, she's got no Silkie in her either!

 

[zengrrl]

A picture would get you some answers quicker please