Candled eggs for first time

[teacher_hawk]

Hello!
I'm so excited because my class is incubating 12 top hat chick eggs. They have been in there 7 days so I went out to candle them. I was so excited because 9 of them definitely have beating hearts and lots of veins!

1 of them just had one spot on it and one main vein, but was mostly yellow, should I leave it in there?

Thanks!

 

[old mill poultry]

Leave it, ones that are questionable I leave in for at least 10days maybe 14. That spot is probally the eye, or embryo with a large vein. It just might be a late bloomer.