I'm teaching a Zoology class on flying creatures of the fifth day. Tomorrow's class is on Mating and Eggs. So, of course, I'm taking my eggs in to candle. Well, I was testing my candling flashlight what do I see, but a bunch of tiny bubbles floating around in the egg. In the my, nearly, four years of raising chickens I've never seen this before. I want to be able to explain this to the kids. So, Help? This is a really huge eggs: 3 inches long, 4.25" circumference.