I wouldn't say a word. If you get a complaint, offer a free dozen eggs. (with blood spots )
I think it tends to happen with younger layers so that may be why you get it now.
Blood spots have nothing to do with fertility or preparing for spring. It happens in all birds but commercially those eggs don't end up in cartons due to automation and candling.
A blood spot is a blood vessel rupture.
I don't say anything to customers since they may not encounter them.
I felt...