Are these pullets or roos?

[Fullcrazy]

Hey there! My hen went broody a while back, and she was very persistent. So we let her sit and hatch a few adopted eggs. 2 hatched, both from brown eggs, and now we have 2 chickies about 9-10 weeks old. I don't know the breeds, just know they had some buff orps, Easter Eggers, and some others. So, are they boys or girls?

 

[Fullcrazy]

Here is a better picture of the black chicken

 

[Fullcrazy]

And here is a better picture of the white one