What is wrong with the egg yolk?

[Aquatic_blue]

Strange. Thanks for sharing!

 

[333113]

I am guessing (but it's just a guess) that the extra bubbles come from a more porous shell. I have that opinion because I see that bubbling more often in my older hens, and they tend to have more porous shells.

I have been successful at hatching these eggs when they are added to the incubator within a few days of being laid.