Bielefelder male/EE female- chipmunk striped chicks question

[NorthwoodsChick]

Biel roo over garden variety EE with beard- hatched 3 chicks that are now 5 days old. The chipmunk stripes make me think they are pullets because female Biels have same stripes, but I don’t want to assume.
Is there any way to tell sex?

 

[ChickenCanoe]

Somebody may chime in with more accurate information but if memory serves. bielefelders and EEs genetics result in chipmunk chicks the difference between males and females is the darkness of the stripes. I believe males are lighter.