I don't see any obvious cockerels in that group. I'm not the best person to ask, but if you could take a closer up picture of the comb and wattles and a side picture of the feathers, I bet someone can give you a better guess.Also if anyone can give me some ideas on the brahma and polish that would be great. I'm unsure if they are pullets or cockerels....
Any crowing yet? They look like they'd be close to the age where they would be starting to crow.