I have a hen that was sold to me as a Dark Cornish, however she is much smaller than her counterpart, and doesn't have the same colors. However, she is a solid layer, and nice enough, so we kept her. She's peculiar in some ways, like the way she crawls through a tunnel to get to my rabbit's hutch (the rabbits are free in the coop with the chickens) to lay her eggs. I figured this out a few months ago when she first started laying, so it's just part of my routine when grabbing eggs throughout the day. Well today I cleaned out the rabbit hutch like I do every few weeks, and I found this tiny little egg (next to her normal-sized egg): She is a solid layer, I was gone for the past 7 days and when I got back, 7 eggs in the hutch + this super small, tiny egg. I'm not sure what happened, but it's definitely interesting!