Hello! I recently got 15 chicks (5 RR's, 5 orpingtons, 2 light brahmas, 1 red star, 1 barred rock, and 1 silver laced Wyandotte). I'm 14 years old and new to raising chicks. We ordered all pullets since we can't have a rooster, yet one of the brahmas appears to be a rooster. The chicks are a week old and the one brahma is significantly larger than all the other chicks. Also, it's chest sticks out sort of like a roosters does. Please give your opinion!!