Mixed Buff Orpington chicks, What sex?

[rebelINny]

Yeah I'd wait too but that white one closest to the camera looks like it may be a pullet. Good luck!

 

[GreyhoundGrrrl]

My Buff Orpingtons are now 6 weeks old and their combs are smaller than your chicks' combs. My birds' combs have not changed color either, they're definitely not red at all so there is that for what it is worth :/