Checking fertility after incubating for 7 days...

[Riven]

But if for some reason the egg was fertile and nothing develops not even the tiny veins, would you still see a bullseye verifying that it was at one time fertile?

 

[Germaine_11.20]

I really couldn't tell you. I would make a guess that by day 7 the egg would be spoiling if it did not develop (whether it was fertile or not) and I don't think you would see a bullseye.
I wish someone else would help out here... it would be nice to have another opinion.

 

[Riven]

I'm going to guess this isn't a really "researched" subject, lol.

Thanks Rustyswoman for your input though!

 

[Selgar]

I just wanted to bump this up to see if anyone knows...

A fresh fertile egg has the "bullseye" sign of being fertile. Is this present still after being incubated for 7 days?

I know this is old, but it might help others. If it died during the first few hours, it might be present, but at 7 days, much less 1 day, it would never be present because of cell division. - sgarciabrooks

 

[Selgar]

I'm going to guess this isn't a really "researched" subject, lol.

Thanks Rustyswoman for your input though!

Actually it is and there are handfuls of published studies on this already.