Sexing coturnix quail chicks?

[Keeperofmunchkins]

Can anyone tell me if these colours of coturnix quail can be sexed by feather patterns/colours?

I know the brown colour in the top left of photos can be sexed and I believe it is a male based on the golden/reddish chest feathers coming in. But I'm not sur eof the others.

There is an Italian yellow one (bottom right), a greyish beige one I can't identify the colour type of (bottom left), and a rosetta/tibetan coloured chick (top right).
They are just over three weeks old.

I also have two chicks that look like the middle chick in the photo below. They are a reddish fawn colour.

 

[Quailobsessed]

Photo #1
top left - wildtype, can't tell from that picture, but you can feather sex them
top right - can't feather sex to identify
bottom right - italian female
bottom left - ?

Not sure on the colour of picture #2.

@Kiki may be able to help?

 

[Kiki]

Where did they come from?
Can you get chest pictures?

 

[Keeperofmunchkins]

Thanks for the replies. They came from ebay eggs so are a mix of colours. I think I have determined that the top left in my first photo is a Pharoah male, the bottom right is an Italian female, and the top right is a tibetan or rosetta maybe which can't be sexed. Then the second photo is a roux dilute or fawn which makes it a sexed as female I think.

That just leaves the bottom left of the first photo. This is a weird one. It is the only one like it in the bunch and is a kind of greyish beige and brown colour. I have attached some better photos below. Any thoughts on colour type and therefore whether it can be sexed?

 

[Kiki]

Mixes don't always follow the feather sexing rules, sorry I can't guess.