When to get fertile eggs for broody hen

[chooki]

So ... day 20, I have 2 eggs hatching.

I have been egg candling and am only expecting 2-3 chicks as the other eggs seem to be infertile, but as a newbie, the accuracy rate is probably not very high.

 

[chooki]

Here is the latest update on my 2 newly hatched chicks:

I am fortunate, because I have a very dedicated broody hen