...but how do i know that that's what i got? they're only 3 weeks old. 4 of the 6 appear to be developing little nubs for combs (the 2 ameraucana's don't have them, but the plymouth rock, the ri reds, and the golden sexlink sp? all do). should i be worried that i have some roosters? i'm new at this, but know that they're hard to sex, right?