I have 1 hen that always lays eggs with blood spot

[KathyJB]

I've searched the forum and didn't find this exact problem, if it is indeed a problem. I have a Black Copper Marans hen that has alway had a dark spot in her eggs. She about 3 - 4 years old. It's a nice large egg too. Just want to make sure it's ok and that she won't get super ill or anything.

 

[N F C]

There's a good article regarding egg abnormalities that may be of interest to you. Here's a link to it:
https://www.backyardchickens.com/a/common-egg-quality-problems

If you scroll about 1/2 way down, blood spots in the egg are addressed.

Hope that helps.