I have 4, 3 1/2 month old Sebs. I have tried to sex them 3 times at 3 different ages. If I am doing this right (and I think I am) they are all geese. What perplexes me is the color sexing aspect. When breeding a blue male to a white female the result is the blues are females and the males are color splashed. I bred a gray male to a white female and ended up with 3 splashes and 1 gray. I am almost positive the gray is a female, but the splashes although a little bigger have voices like mom. I vent sexed them and can find no male organ. Any help out there!!!!!!!!