The three birds in the top three pics with the bright red combs and light barring are all cockerels. The six birds in the bottom four pics with the pink combs and dark barring are all pullets.
Not currently, but I have had them in the past as well as Barred Rocks and Cuckoo Marans which are also barred breeds. In all barred breeds, dark barring is typical of pullets and light barring is typical of cockerels. Of course the bright red combs and wattles of the cockerels just further confirms their gender. The hens combs don't turn bright red until shortly before they begin laying.