One of our BOs is bigger than the others, and her/his comb is much bigger, redder, and he/she already has the red wattles that none of his/her siblings have. He/she is 8 weeks old now. I'll post a pic later when I get home but I'm wondering if that is enough to know it's a rooster, or what else can I look for? I know the girls get the same comb/wattles eventually right? This is our sweetest, friendliest, most docile bird, too! Easiest to pick up, not skitterish, etc. Here are some pics. Any guesses? Sorry, these were taken w/ my iPhone since my husband has the camera in Wisconsin this week. With the others from the same flock.