Peachick gender?

[JestersEye]

I think this Black Shoulder peachick is almost 10 weeks old. (IBs in the background are approx. 7-8 weeks old.) Is it still too young to tell if it is a hen or a cock? I know it takes quite a bit longer to tell the sex of India Blue chicks, but I was told that it was possible to tell the BS chicks apart earlier, since the males start to get darker while the hens remain light-colored.

I will need to find a BS mate for this chick, since I was hoping to breed for the BS gene which is recessive. If anyone can identify the gender for me, then would anyone happen to have a young BS of the opposite sex that I could purchase? I live in Southern New Jersey, and it hasn't been easy finding any peafowl breeders in my area. The couple I did find are all out of BS chicks.

 

[fancyfowl4ever]

IBs and BS can usually be sexed via flight colour at only a couple days old already. Females will have even, dirty orangy brown primaries while males in the IBs will have bright orange primaries and BS males will have either bright orange or orange with brown feathershaft.