Hi guys we bought chickens from the pet store being told that there is a two percent chance that you will get a rooster.We bought one Rhode island red, one Leghorn and two Australorps they are now 14 weeks old and we are noticing that one of the australorps look very different to the other it also has a much larger comb than the rest of the chickens and bigger bumps on the side of its legs. It also seems to be the boss of the flock. Could someone please help me out and tell me if i have a rooster or not? Thankyou. In the picture this is the two Australorps with the Rhode island red as you can see it has a much larger comb.