Seam in Buff Orpington egg

[fannymae]

I searched the community but was unable to find anything similar. My Buff Orpington, Carrie, started laying a couple weeks ago. Off topic but pretty cool, every single one of her eggs (except the first) has been a double yolk-er! They're huge. Anyway, today she was yelling more than usual so I went out to check on her and found an even egg even larger than usual. The strange thing, though, is this seam that runs perfectly around the egg. I'm not concerned about it as I know that chickens can lay some weird eggs, especially when starting out. Has anyone seen this before? Know what causes it? It almost seems like the egg printer paused for a while and jumped a line. Top egg is her normal size egg for reference.

 

[Idaho Chicken Bungalow]

I find myself reading this article often give it a go:
https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

 

[fannymae]

I find myself reading this article often give it a go:
https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

Thank you so much! This is very helpful.

 

[Paz]

They are fused eggs, no?