male or female?

[Citychicken12]

How can you guys tell? I've never had any of my pullets turn out to be cockerels

 

[Peeps15]

I have 2 black australorps, supposed to be pullets. They are 11 weeks old and it seems they are likely cockerels?!

and here's the other one.

 

[Citychicken12]

Woah, those are huge!