Pullets or Cockerels?

[Nissenl]

Need help with gender! 6 week old chicks. Could use some feedback as I’m new to the chicken community. I have posted 3 chicks.

 

[Chickenmama2525]

id say 2nd and 3rd are most likely roos! need a better pic of #1

 

[GermanKennhuhn]

The last two look like cockerels to me. I’d say pullet on the first, but more pictures would help.

 

[SilverBirds]

1 looks like the only girl.