I am realizing that I am not good at feather sexing my chickens at all and now I am unsure if this is a roo or a hen...she was hatched under my broody hen on 07/27/13. She is not crowing at all, however her back feathers are throwing me off.
You can sex this bird by color. The black breast and red head and back is a rooster color pattern, you'll never see a female bird this color. Plus the comb and saddle feathers.