Too much red in its comb at this age typically equals Roo. However, my cross bread Gold/Silver Laced Wyandotte hen had lots of red in her comb, however, she didn’t have any indication of waddles until she was like 12 weeks old. Despite all indications, visual inspection can be lacking. If at week 22-25 or before, it starts crowing then you’ve got a Roo. Also by week 8 if there is bright red waddles you’ve got a Roo definitely