We were making deviled eggs for Thanksgiving and I hard boiled a few of "our" eggs to show the kids how hard it is to peel freshly laid eggs. (That is why the egg looks so ratty!) The rest of the eggs were store bought eggs that we all know sat around in storage before ending up at the grocery. Anyway, after boiling and peeling this egg I cut the fresh egg in half and was taken aback. There was a "bulls-eye" in the yolk. It reminded me of tree rings. The kids and I checked it out closely then decided to take a photo and ask the knowledgeable folks on this forum. What caused the ring in the yolk? Also, if you look closely, on the right half on the far right side of the albumen there is a reddish streak. I figured that was probably a blood spot, we get them periodically. This is our first year with chickens. Amazing how much there is to learn about them!