Are these little ones going to be Hens or Roosters?

[Pollogal1]

Hi there! Just need some help to see if I will have roosters or hens when they grow up. The black and grey chicks are about 6 weeks old. The brown one (2 last photos) is about 5 weeks old. I am thinking they will be hens…but not too sure. They are mixed breeds. Hoping more experienced eyes can help. Thanks!

 

[nuthatched]

No obvious male yet