You may have ever wondered how chicken eggs are fertilized. The male chickens share their sperm with the female hen to produce a fertilized egg. There are several ways that male chickens fertilize their eggs. The male lays on his back and touches the hen’s neck, vent, cloaca, and papilla, the reproductive parts. Before a hen begins laying eggs, the male needs to mate first.
The egg white surrounds the yolk in the magnum. The isthmus, or membrane, begins the shell-forming process. Then the hen lays the fertilized egg.