Does laying mean able to fertilize?

[Jeffross1968]

Once a roo is mating and doing his part, is the hen's part just merely laying the egg? If the mate is successful and sperm is collected, does that automatically mean a fertilized egg is on the way?

I ask, because as of today, my roo seems to have figured things out

 

[Fred's Hens]

I don't suppose anything in nature is 100%, but the odds are now overwhelmingly in your favor.