I am wondering if I have a rooster. Its a Barred Rock that looks just like the other hens, only she's larger. She has black and white stripes, not gray and white, and a large, floppy comb. Today when giving mealworm treats, s/he mated with one of my Black Australorps - exactly like I've seen roosters mate with hens. This chicken doesn't look at all like a rooster, save for s/he's larger than the other hens - do I have a rooster? I have never heard them crowing and the hens only just started laying about a month ago. My flock is all the same age, about 6 months old.