I have 20-week old chickens, and I'm beginning to think one could be a rooster? It doesn't have the long tail feathers yet, but it is contantly making this long low pitch throat sound---whoooooooooaaaaaaa! Could it be? It is constantly pecking the head of another hen (the bigger of the two) and sometimes really attacks it. It is constantly following it around pecking it. They are in a 20 x 8 ft wire run with a coop inside. Is this hen in danger do I have a rooster?? Its the one with the gold head in the picture (taken about 2 months ago) Thanks