As you can see in this image, the center hen in front has a much more developed comb and wattles. This picture doesn't show it very well but hers are much deeper red and much more fully developed than the others. I have five of these girls (one is off camera) - Black Australorpes - and I got them all the same day. They are all the exact same age. So how can one be so much more developed than the others? And, she is definitely the alpha hen in this little flock.