One of our hens occasionally lays a mini-egg.
No, she's not a banty, so I have no idea why they occasionally come out this tiny. And I also have no idea which of the 16 hens is laying these, except that it's not the Americauna, who lays green eggs.
Compared to a "regular" sized egg - it would take a lot of these to make a cake!
They do, however, cook up into the cutest little fried egglet you've ever seen.
* Ok, so it's not really a proto-critter either - we don't have a rooster so our eggs aren't even fertilized. Work with me here.