Ten weeks Old - Pullets?

[JDipiet]

I have two pullets (I hope) that are ten weeks old. Is there a way to tell pullet or rooster? Photos below. The first three are Blue Copper Marans, and the others are the Blue Rock. Thank you.

 

[DemeterAD9]

Both look to be girls to me.

 

[SilverBirds]

All look like pullets.

 

[Jener8or]

They both look like females.

What I am not sure about, though, is if it is a Blue Rock and it has barring, then I'm not so sure. Most information says that Blue Rocks are a sex-linked cross.

 

[JDipiet]

They both look like females.

What I am not sure about, though, is if it is a Blue Rock and it has barring, then I'm not so sure. Most information says that Blue Rocks are a sex-linked cross.

What do you mean by sex-linked? It is supposed to be a Blue Rock, she is quite large and her legs and feet are bigger than all the others. But, who knows what breed? She came from a farm store in Maine. All are supposed to be pullets.

 

[WingItRanch]

I know nothing about Blue Rocks but all chickens pictured do appear to be pullets.

 

[Jener8or]

What do you mean by sex-linked? It is supposed to be a Blue Rock, she is quite large and her legs and feet are bigger than all the others. But, who knows what breed? She came from a farm store in Maine. All are supposed to be pullets.

Blue Rocks are a cross between a Blue Andalusian or Blue Australorp male and a Barred Rock female.

The barring gene is carried on the Z chromosome. Male birds are ZZ and females are ZW chromosomally. When a barred female is bred to a nonbarred male, all the males will will carry the barring gene and be identifiable by a white spot on their head at hatch. The females won't carry any barring since they didn't receive any baring gene on the Z chromosome from their sire.

Here's the Punnett Square so you can see and the article I got it from that probably explains is a lot better.

https://poultry.extension.org/articles/poultry-management/sexing-day-old-chicks/

 

[Kaw-Liga]

I have two pullets (I hope) that are ten weeks old. Is there a way to tell pullet or rooster? Photos below. The first three are Blue Copper Marans, and the others are the Blue Rock. Thank you.

All pullets.