Still very young but does anyone know the sex?

[NorthEastGameBirds]

Only around 3 weeks old. Does anyone know any tricks or tips to help me know the sex of these two chicks?
The eggs were a mix of shamo and Asil so not quite sure what I have either!

 

[azygous]

It's much too early to start seeing secondary sex characteristics. Be patient. In just two more weeks, any cockerels should be obvious by red-orange conspicuous combs and little wattles emerging.

 

[neo71665]

Yep, still too early.