Fertile?

[rickyschicks]

How long should a rooster be in with the hens before their eggs are considered to be fertilized?

 

[greenfamilyfarms]

The easiest way to tell is to start cracking a random egg open every day for a week, then make breakfast out of it.

Here is a link with pictures to tell the difference between fertile and non-fertile:
https://www.backyardchickens.com/forum/viewtopic.php?pid=346838

 

[dsqard]

It will take at least three days before the hen could produce a fertile egg.
BTW -