Pullet or Roo

[AllenSpen]

I have a5 week old white leg horn that was supposed to be a pullet but I think it might be a roo? Can anyone tell which one it is?

 

[Mamatomany123]

Cockerel

 

[Fluttershy17]

Leghorns have big floppy combs. My pullet is around 6-7 weeks old, and her comb is about that size.