Mystery "bantam" and "black sex link"

[Dona Worry]

So about 2 weeks ago I got 4 basement bargain barred rocks from TSC, and since the minimum chick purchase in my state is 6, I picked 1 each from the other 2 bins: "assorted bantams", and "black sex links"
Now. The white chick was easily twice the size of the other bantams, and the only white chick. The black chick was unremarkable, but now is developing these yellow markings, which I've never seen on my other black sex links-- I've had several over the years. They are pretty similar in size. White chick is slightly smaller, but is also much wilder and "tucked in" I these pictures. Has some light buff coloring coming in. What have I got here? As labeled, or mystery chicks? They are approximately 3 weeks old.

 

[nuthatched]

Too early to say breed or gender for sure. What color are the black ones legs?

 

[Dona Worry]

Too early to say breed or gender for sure. What color are the black ones legs?

Gray/black. Not super dark, but not yellow. White chick has yellow legs.

 

[nuthatched]

Gray/black. Not super dark, but not yellow. White chick has yellow legs.

Hmm, could be a new recipe for black sexlinks, I'm not sure.

 

[Dona Worry]

Hmm, could be a new recipe for black sexlinks, I'm not sure.

I'm also thinking the "BSL" has a REALLY prominent wattle and comb for a 3 week old pullet...pulled.... but sometimes they are tricky

 

[Cheetah Chicks]

Black sex link pullet has golden/brown marking on her neck, same goes for the roo.

 

[JacinLarkwell]

Black sex link pullet has golden/brown marking on her neck, same goes for the roo.

What do you mean? Black sexlink females are black with occasionally bronzing on the next and chest. Males are barred amd look nothing like females do

 

[Cheetah Chicks]

https://www.backyardchickens.com/th...ack-sex-link-male-from-a-barred-rock.1098024/

From this , i concluded the above statement.

 

[Flockking]

I'm also thinking the "BSL" has a REALLY prominent wattle and comb for a 3 week old pullet...pulled.... but sometimes they are tricky

Any updates?

 

[Dona Worry]

Any updates?

So I think Sugar IS actually a bantam, but as for Saffron, who knows!
She has pretty black legs, and her yellow is VERY yellow