This maybe hard to believer but it is 100% right all the time for me. get a needle and some thread and thread the needle. You are now on your way. Hold over the egg if it moves back and forth it is a male. I it moves around and around it is a female. This may seem crzy as it did to me when I first learn this from a old Indain who hatches his own. But I tryed it on a hatch and found it 100% correct. Try it one time and you to can set your male and females you to will become a believer!!