Help gendering Sumatras

[KCsChickens]

Hi, I wanted to get some opinions on what sex my 13week old Sumatra chicks are, I have 5 & have numbered the photos to make it easier, all have similar tails (sometimes they hold them them up sometimes down) but number 2 has a smaller pea comb then the others is this my only pullet?thank you

 

[MysteryChicken]

1, 3, 4, & 5 are cockerels.

 

[KCsChickens]

1, 3, 4, & 5 are cockerels.

Thank you

 

[MysteryChicken]

Thank you

You're welcome.