Incubation Day 4 - not fertile!?

[country flock]

I have a couple eggs on day 4 of their incubation and one looks different than the others. It's just a faintish ring whereas the rest have a dot with veins branching off. Is the egg infertile? If you have any pics, that would be great!

 

[subhanalah]

Is the ring red near the shell or a dark thick ring?
I'd give it at least until day 7, preferably 10 before you decide to Chuck it.

 

[Farm Girl83]

Definitely wait at least until day 10, it just may be a late bloomer. I don't make any rash decisions before day 14 unless the eggs show signs of damage.

 

[country flock]

Okay! Thanks!