Be patient, and use a real camera, not a phone camera. Phone cameras often don't capture details like feather shape.
Here's some more. Olive Oil the larger one to me seems like a roo. The comb is pink not quite as red as it looks from picking her up. Hope these work.
Buy/order vent sexed chicks, or purchase birds that are over 6 weeks old, and know what to look for in terms of comb and plumage coloring. What state/region are you located?
