How to tell if an egg is fertile with a flashlight?

Have you ever wondered how to determine if an egg is fertile without cracking it open? Well, one simple method involves using a flashlight. Here's how you can do it: First, hold the egg up to a bright light source, such as a flashlight. Look closely at the shell, specifically the area around the air cell, which is the small, slightly raised spot on the larger end of the egg. If the egg is fertile, you may be able to see dark spots or veins inside the shell, indicating the presence of a developing embryo. Keep in mind that this method is not 100% accurate, as some eggs may not show visible signs of fertility even if they are. However, it can be a helpful tool for those looking to identify fertile eggs for breeding purposes or for other reasons. So, the next time you're wondering if an egg is fertile, give it a try with a flashlight and see what you can discover!