Today like everyday I went to collect my Hens egg. She lays one everyday at 7am. Today she had a freak egg. It was enormous. The biggest egg I have ever seen from a chicken. Does this happen often? Is it dangerous for her to have such a large egg? The egg is bigger than a duck egg. I've attached a picture. In the pic the smaller egg is her usual size and the large egg is her freak egg. I wonder if it's a double yolker. I haven't cracked it open yet because I may put it in the incubator with my next batch.