Do these 8 day old eggs have blood rings?

[SunriseHills]

Hello! We candled our eggs earlier today and noticed that 3 of the eggs look like they might have blood rings. The eggs are currently 8 days old. What are your thoughts?

 

[nuthatched]

I can't see the last very well, but the first two do. I'm sorry.

 

[SunriseHills]

I can't see the last very well, but the first two do. I'm sorry.

Thank you. Just wanted to make sure before I removed them from the incubator. I'll try to get a better picture of the 3rd egg later today.