Gender of 7 week Light Sussex

[Butterflykisses2629]

these are mine only 2 hatched out of the 6 we put u nderneath my coronation hen not to sure what sex they are they were 6 wks in these pics neither chicks are showing any sign that their combs are growing or turning red looking at the tails on my other chickens who are still young they have the same shape tails as them I have a light sussex 2 speckled sussex and 4 isa browns