Gender confirmation on Barred Rocks, EE, and Buff Orpington (please help?)

[rachelrenee1]

Ahhh, ok that makes sense, because I was noticing all of the cockerels were more white than black. One of my girls (Juliet) is so dark that her barring is almost gray, because it is so light, it is becoming more distinct as she ages, but still, she is very dark.