What am I seeing?

[ElioraImmanuel]

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.

 

[24chickenhome]

If u candle the egg after 7 days and see a dot in it that is ok that is the chicks eye. But if they're are a lot like more than 3 dots in it I do not know.

 

[rayray983]

First off how old is the eggs the bubble you see in could be the co2 and sulfur of a dead embryo aka the start of a stinker I'm no scientist but sounds good to me

 

[rayray983]

I see 5th day I only know about bubbles because my grand dad used to tell us when I was younger that the bubbles early on in the egg means it will be a rotten egg and he would have us fed em to the pigs