Blue Copper Marans chicks pullets or cockerels?

[16 and me]

Hi all,
These are supposed to be 2 Blue Copper Marans pullets. The lighter one has a a light pink to her comb already at just under 3 weeks. The darker one's comb is black - I presume it'll change, but at what age?
I know it's early but is there any way to identify sex on them?

 

[Tookie]

The darker one is probably a male, I think the lighter one is a male too.

 

[16 and me]

The darker one is probably a male, I think the lighter one is a male too.

Oh dear. I already have a roo, and 2 older cockerels, now these. I can have max 2 Roos (I have 10 adult hens, 2 pullets at 6 weeks & now maybe 4 of this group are pullets). That would be 18 hens if all goes well. Which of the cockerels to keep... Sigh

 

[Tookie]

Oh dear. I already have a roo, and 2 older cockerels, now these. I can have max 2 Roos (I have 10 adult hens, 2 pullets at 6 weeks & now maybe 4 of this group are pullets). That would be 18 hens if all goes well. Which of the cockerels to keep... Sigh

I really hope I'm wrong!

 

[GirlsHuntToo]

1st one is a male 2nd one is a female

 

[16 and me]

1st one is a male 2nd one is a female

Thank you! Is there something specific that helps you identify?

 

[GirlsHuntToo]

The first ones wattles/comb is red/pink the other is the oppsite

 

[MysteryChicken]

Dark one is your only boy.

 

[21hens-incharge]

At just 3 weeks it's to early to tell in my opinion.

 

[16 and me]

Thanks all for your input! Can anyone explain about the black comb? Is that common to specific breeds, and ar what age would it change to red?