my chickens are 20 weeks old. I have 4 Cochins. 1 is a roo and his comb and wattles are HUGE and he is HUGE. The other 3 are the same size and I am 99% sure all pullets......... But 1 of them started getting bigger comb and wattles and the other 2 still have nothing. is this one just a quicker maturing pullet? I don't see any other "roo" signs.