I have 4 easter egger pullets (supposedly) that are now about 16 weeks old. They aren't displaying any signs of laying and my rooster doesn't show any interest in them. One has a slightly bigger comb than the other three, three have red combs, and one's comb is still small and pink. They aren't showing signs of being roosters like crowing but they do mock fight at times. If they are roosters, wouldn't they be starting to crow? I really want them to be pullets and am getting nervous about the rooster's lack of interest. Any suggestions?