Mystery Chick.....Help me figure this one out!

[Hen Daddy]

Ok, we got a bunch of chicks a couple weeks ago from a feed store. 2 of which were supposed to be black sex links. They are now 3 weeks old. 1 of the birds looks like a BSL, has started to get its golden feathers in and has a black comb. The other birdie, has all black feathers with a yellow comb. We have no clue what the latter bird is...

Here is the BSL:

And here is the mystery bird:

I know its kinda hard to see, but the first one has golden specks thru-out its body, and the second one does not.

Thanks in advance!

 

[LilPeeps]

They could both be black sex links. Some have more red than others, so the all black one will likely start to develop red in a few weeks.

 

[Hen Daddy]

even with a yellow comb, when the obvious one has a black comb?

 

[LilPeeps]

Yes, their combs will both eventually turn red.