Sexing Twelve Day old Chicks

[JDipiet]

We have three chicks that are the same age (the Rhode Island Blue is a couple of days older). They are all getting wing and tail feathers at different rates. Can the sex of any be evident yet? See photos below.
#1, 2, and the last one are the Rhode Island Blue, #3, 4, 5 the Australorp, and #6, 7, 8, a Blue Plymouth Rock.
Any help is appreciated.

 

[The Moonshiner]

Can the sex of any be evident yet?

No

 

[nuthatched]

It's far too early yet, wait 4 or so weeks.

 

[ella2025]

Way too early. Feather development usually isn't useful until like 3 months old.