A
Anonymous
Guest
You can make one by having a 40 watt bulb on a holder. Then make a tube to go over it out of metal or even cardboard about 8 inches high. Finally put a lid on it made of cardboard with a hole cut out which will be big enough to hold the egg. Tape the lid on to stop any light coming through. Check them in a room as dark as possible. If they are fertile you will not be able to see through parts of the egg and there will be a dark blob. An infertile egg is completely seethrough. Good luck............Hope you have some littleuns in there.