Those eggs are AWESOME! I bought a couple of Leghorns last year because my barred rock, dominique, easter egger, and orphingtons quit laying a good part of the winter and the leghorns keep on laying like good girls. One of them and my barred rock lay giant eggs too but haven't seen one quite that large! You've got a winner! It would be interesting to know how many grams that big one is. If you get another one like that (I'm sure you've gobbled that one up already) you ought to weigh it! My largest was 87 grams. Normal ones run between 65 and 70 and my dominique consistently lays embarrassing 35-40 gram baby eggs! Congrats! Maybe you'll get some double yolkers too!