Help with gender and color

[DesireeM81]

I have two quail that I'm unsure of sex wise and one that I believe is female but her coloring is different than standard jumbo.

This is the interesting colored girl.

This one of the ones I need sexed.

And the other one

Sorry if the pics aren't the best. Not sure the best way to photograph these guys. They are right 3/4 weeks old now.

 

[cmobley]

Bottom pics look like females they have spotted chest

 

[dc3085]

The gold speckleds are females the tibetan tuxedos cant be sexed by feathers.

 

[DesireeM81]

The red chested one is a Tibetan?

 

[DesireeM81]

I have one English white and this other one. At what age can I sex them? My male golden is crowing already but my standard male is a quiet one even when separated.