I've been thinking my 6 week old Whiting True Blue is a cockerel because it's comb grew pretty fast. The breeder that I got it from said judging it's tail feathers compared to my Maran's that it is a pullet and my Maran is a cockerel. However, these two have been puffing up and fighting each other lately. So that makes me think they're BOTH roos...what do you guys think? I know it's pretty young to tell, just wondering of what I've seen so far.