What sex are my chicks!?

[Alex15]

Theyre only a bit over one week old, but with the two light sussexes they ahve already developed so differently and was wondered if anyone has any idea which sex might be which?

The above two are little austrolorps, same age, they pretty much look the same, so I'm thining I have either two boys or two girls and was wondering if anyone has any guesses!?

 

[Vamvakas]

Way to young to tell.. But the 2nd pic you might have a roo on the right.

 

[Alex15]

I know I should be patient but I'm getting obsessed with sexing them! I have heard that pullets tend to feather out faster, so im also thinking the one on the right may be a too!