PLEASE HELP!

[Wonder Quails]

Hello!
Today is day 4 of my duck eggs! Over the past days, including today, it showed no signs of veins. However, I do see a darker red spot, not very dark though. Are these fertile?

 

[Wyorp Rock]

Give it a few more days.

 

[Wonder Quails]

The only thing is that, it looks different on the camera compared to the real life.

 

[Wonder Quails]

For example, the red is less red than the pic. Maybe the camera captures more???

 

[BelovedBirds]

Hello!
Today is day 4 of my duck eggs! Over the past days, including today, it showed no signs of veins. However, I do see a darker red spot, not very dark though. Are these fertile?
View attachment 3325036

Take another photo in a couple days to compare!