How can you tell if a chicken egg is fertilized without cracking it?

Good day, fellow finance enthusiasts! I'm curious, have you ever wondered how one can determine whether a chicken egg is fertilized without resorting to the age-old method of cracking it open? I mean, it's a fascinating question, isn't it? After all, the prospect of being able to identify a fertilized egg non-invasively could have significant implications for farmers and poultry enthusiasts alike. So, I'm eager to hear your thoughts on this matter. Do you have any insights or methods that you could share with us?