you can candle emu eggs with a bright light. I bought one at advance auto parts, and it works very well. If you cant see through the egg them somethings in it, also you can see the air cell fairly well and tell if the head or beak is coming through. Here is a link for the type of light im talking about, it's a led, and small enough that it fits against the shell perfectly. http://shop.advanceautoparts.com/we...ormance-Tools_10090078-P_N3092_A|GRP2027_____