I was wondering how you sex roman tufted geese? I heard that usually only the females have gray on them. I also read somewhere else that the males are 4-6inches taller than the females. also read soemthing about the boys voices being higher pitched... Our old pair was perfect...gray only on the goose & the gander was solid white, just a little bit taller but completely obvious at first glance who was the gander & who was the hen. we got 4 new ones recently, and thoguht they might all be girls because of the gray, but now we're not sure. 1 older one is much bigger than the rest. any help is appreciated.