Americauna (maybe?) pullets or Roos?

[SchwartzLakeFarmNC]

The only one that even could be a cockerel in my opinion is the one with the light colored head, I'm looking for any signs of "rust" coloration in the ends of the wing area or chest, but that's my only concern at the moment knowing their ages. Good chance you might be 4 for 4 on pullets in a few weeks.

 

[atho128]

Updated photos! I believe atleast 2 of them are 5 weeks at this point, but minimum of 4 weeks