My other BO's have always clearly been roos or pullets by five or six weeks. This chick is 12 weeks old now, and just in the past few days its face has reddened and it has tiny red wattles sprouting. I have one other BO of the same age--she is larger and rounder in body size, she has a light colored little comb, and she has no red on her face at all. Here is the confusing BO. For some reason this bird is skittish, I had to chase it around a bush to get any pictures. And in this picture the BO in question is the bird facing away in the very center, the other one with no red in the face is the one back near the rabbit waterer. What do you think? The face on it is really reddening, but the comb isn't red or very big like other BO roos have been by this age.