Silkie chicks boy or girl? Thanks!

[Lynnschickens]

They are about 5-6 weeks except #4, which is 3-4 weeks. Thanks! I hope the pics are ok.
(Chick#1)

(Chick#2)

 

[Lynnschickens]

(#3)

(#4)

 

[Wyandottes7]

To me, they're all looking like pullets, so far. But, it is way too young to be sure, since Silkies are difficult to sex.

 

[Lynnschickens]

Thank you so much for your time!

 

[BantamLover21]

They're too young to sex, but I don't see any obvious cockerel traits yet.