I know what you mean.... I have another RIR pullet who is 11 weeks old, and a total boss lady. She is smart and sassy, and the obvious leader of her "sub-flock". Not shy at all! This chick is the opposite. Quite shy and seems to be the last in the group to figure things out. I am definitely leaning "pullet" but, I just don't feel 100% sure because the comb is larger than I expected for a pullet, but still smaller than I would expect for a cockerel. It seems most people here also think this kiddo is most likely a "Ruby"! And yes, it's a good name for a RIR!