I am so excited! Found this today. I am 99% sure that it came from Clover, my white leghorn. She was hatched the last week of March. The other chickens in my flock are EE, SLW, and black copper marans. I don't think EE ever lay plain white eggs do they? Besides, they're all a good month younger, so they're barely 20 weeks. It seems very long for a firstie, but it's definitely skinnier.