Australorp mixes..Pullet/Roo?

[vron]

Two pictures of what I think is a pullet and a roo, but not so sure of either. They were supposed to both be pullets, but I'm thinking the larger one is definitely a Roo. What do you guys think? Both are at least 15 weeks.

Pullet?

Roo?

 

[ChickPeas]

I think you're right! They look an awful lot like my two and I KNOW which is which sex.

 

[Mahonri]

I think you are correct. That's some beautiful black.

 

[vron]

Thanks for the posts, I'm a bit more reassured now...was going to have to get rid of one of them if they were both roos. The larger one is really gentle as of now, so might be a good sign. Has never shown any aggression...though he looks pretty intimidating