mine are now 11 weeks and i have a 'feeling' about some but not sure if its wishful thinking or not.... they are starting to get the bald headed look but no wattles growing, no strutting, there is one HUGE bugger compared to the rest (guessing that will be a tom for sure...he's a monster!) but the other 7 im still guessing. do you have to wait until they gobble to know ? at what age would that be??