Well, we're new chicken owners - we just built our coop over the last 3 weekends. We got two chicks that were one week old (a Buff Orpington and a Plymouth Rock Barred) and then an 8-week old Ameracauna yesterday. All were sold as females. It's the Plymouth barred rock that I'm wondering about. Pictures below. Ah RATS, it turns out I can't post pictures/URLs as a new member. Well, I guess I'll just describe it then. :-( The barred rock (4.5 weeks old now) started growing its comb VERY quickly about a week ago. Our buff orpington has far less comb. However, in favor of pullet-hood, the barred rock has very dark legs and the plumage looks like the dark pullets I've seen posted on similar threads - not at all like the more silvery or grey cockerels. And this one's comb, while pronounced, is yellowish. I suppose there might be some pink at the base but that looks like the bird's skin or something. Anyway, sorry I can't post pics yet. I was hoping for advice early on. In general, can pullets of certain breeds grow their comb way early compared to other breeds and still be pullets?