Fart eggs. Just a hiccup in the egg making process. No big deal.
Your lucky it is intact. I got one from a hen that is starting yesterday, it was one of those that are just thin..and yep, those darn chickens ate the inside of it..all of it! I hope she starts laying better, and..in the nest box..I found that one in the doorway of the coop. I herd a ruckus yesterday morning, I now wonder if it was her wondering what in the world was happening. She's a little dingy for now, but she'll get the hang of it, I hope.
