The difference between pigeons without fine eggs and fine eggs

The pigeon -free eggs can be distinguished by light. You can see blood wire in the eggs, and no fine eggs can be seen.There are many reasons for the fertilization of pigeons. It may be because of age. Pigeons of younger pigeons will easily produce no fine eggs, especially the first nest eggs will easily not be fertilized.When you are too old, you will also have no fine eggs.Secondly, crowded environment will also affect fertilization.