I do not have that many pied eggs laying around. If only I did, but I was just wondering about a potential external factor that is playing a role, temperature, humidity, air pressure, or an internal factor how the snake rests in the egg. I'm not saying I have the answer to this mystery I'm just saying I find it hard to believe that it is random. Nature doesn’t do random. It may seem that it does but most random things are genetic mutations and considering we are already dealing with a genetic mutation It just seems there is something else making an impact here.