So you couldn't break that to me gently huh?Not an opinion. A fact. Have kept, raised and bred Rocks for nearly 55 years. Don't need to guess anymore than I'd guess about a young whitetail deer with buttons on his head would be a button buck, not a doe.
They are both cockerels. There is a physiological difference between the males and females. They are different, not only because of their sex, but the secondary characteristics that distinguish them as surely as bucks have antlers and does do not.
The males carry two genes for barring. Thus, the male presents with barring far different than the female. The body types are also different. The male is designed to stand tall, to be watchful over his flock and since he doesn't lay eggs but rather mounts the females, his legs are taller, thicker and his body is shaped differently. His comb matures at 7 weeks and shows red, as well as sprouting red wattles. The females, the pullets, do not display these secondary sex characteristics until nearer the onset of laying. The females barring, with one gene, gives the bird a darker, blacker appearance. The female is lower to ground in body stance as she needs to be mounted for fertility and lower to the ground to lay eggs.
The tails are different, the head shape is also different and finally, the feathering itself is altogether different.
Those are extremely handsome young cockerels you have there. Congratulations.