Weird Wrinkled Egg

Kind of an odd post I know, but I wanted to share this bizarre egg I gathered last night. Weird and wrinkled, it's very large, about 2x3" and you can see it compared to the others I gathered at the same time. No, it has not been altered, and no I didn't do any science experiments by keeping this egg in vinegar for several days, this is the real deal.

I'm currently looking for some reasons and it looks to be some sort of bronchial thing so far. Still researching, but in the meantime...sort of like the twilight zone!