how do eggs get fertilized?
 Hen's eggs begin as yolks in the ovary, and once released they pass into the infundibulum, a funnel-shaped organ where the sperm are waiting. There they are fertilized, and pass out of the chicken via the same route the sperm entered. The egg white gathers around the yolk in the magnum. In the isthmus, the shell membranes are laid down. 