Any guesses as to if my Rhode Island Red is a pullet or rooster? She/he is bigger and has a much larger comb than my other chickens that are the same age. She/he is about 8 weeks old. Also, would like to know what breed is this black and white pullet (in the front)? She is about 7 weeks old. I thought she was a barred rock, but she has very different coloring than the other one I have.