I've been thinking this way for a week now. The only thing I have to go on is the comb. They are hatchery birds, likely not related. Could the one with the turning comb still turn out to be a hen? I'm hoping! I have a GLW that I think is a Roo also!! If that's the case I got 80% accuracy. Ordered 10 birds, one died on day 3 and now it's looking like two are Roos! Ack!