51. An egg inside an egg
Now that’s weird.
We’ve heard of double yolks but we’ve never seen an egg with a shell inside another.
A commenter who knew their chickens explained: “It’s called a counter-peristalsis contraction. When one egg passes through the oviduct and then instead of passing further, goes back. It then can become part of another egg forming in the hen.”
It happens more often in young chickens.
