View attachment 1296429 yellowish bottom, blue top
I think I have solved the mystery. I had a full NN hatch out a group of chicks last fall. She must have gotten hit by my Ameraucana rooster before a fox got him. I only have one Ameraucana hen and I know I collected all the eggs yesterday. There were two blue green eggs in the nest today, and I've seen at least one of the naked necks investigating nest in the few couple weeks. That means I've got a bow tie naked neck girl who lays blue eggs!
Too cool!