I have 2 silkies that are approx. 12 weeks old or so. One has crowed, so I know I have at least one rooster. If I scratch their backs, one does the butt up thing that hens do. Or do roosters do this also? I have found comb size don't matter in these since I have one black one with a big comb that I thought was a roo because of comb size and she's laying eggs, so guess not! Here are some pics. What do you think?