I am on day 6 with my eggs and only one has the veins. what it going on?

[chicken and duck lover]

im really need help on this

 

[HuffleClaw]

Would you be able to post candling pictures of the egg in question?

 

[nuthatched]

We need info to help you? Do you have any pictures? What incubator are you using? Have you doubly checked the temperature and humidity to make sure it's being read accurately by the incubator sensor? They also might not all be fertilized. Are these ducks or chickens?

 

[JustAChickenLoverOverHere]

Hi, what type of poultry are you incubating?
Do you have calibrated hygrometer and thermometer?
What incubator are you using?

You should see veins by the week mark. It may also be more difficult to see due to the color of the egg.

If possible, could you post pictures of these eggs?