Male or female? They're confusing me

[EllieHasTooManyHobbies]

So I have a polish and a black Sumatra that I'm not entirely confident on the "hen-ness" of anymore. Lol. They are both pretty calm but they're also both the smallest ones in the flock. They're about 15weeks and no one is crowing but their feathers are making me a little suspicious. Any thoughts?

 

[sourland]

15 weeks old? I think they are pullets.

 

[Painted Calls]

Both are pullets.