Sex of quails?

Hi can anyone tell me what sex these are looking like? Sorry the pictures arent great i've misplaced my camera so these have been taken on my phone.




And just because i think there cute

Always save the best till last

first 2 look like males, 3rd and 4th look like ladies. Other one a bit too dark to make out and last one is too young to know anything about sex me thinks

Thanks Andoy 50/50 isn't bad i suppose better than hatching all males! I didnt think you would be able to tell anything from the 5th picture i just liked it. Well fancy not knowing what sex the last picture was tut call yourself an expert

I agree with Andoy, first 2 male, next 2 female