Help Sexing

[Adri_San27]

I need help sexing my brown coturnix's! They are 4 1/2 weeks old. I know that males have a rusty breast, and females have the black spotty breasts. I'm confused because a lot of my chicks have a spotted AND rusty colored breast. Would these guys be male or females??

 

[deerman]

males have the darker brown, chin and front neck feathers, they have spots also. Pics ??