Picture of Fart Egg, Large Egg and Double Yolk Egg for Comparison

[ThePamperedPullet]

Here is a picture of what is called a Fart Egg or Wind Egg which is on the left. A standard Large Egg is in the middle and a Super Jumbo Egg is on the right.

The Fart Egg was laid by a full size Barred Rock hen that had been laying for about 4 months. It is merely an anomaly that happens on occasion the egg making mechanism in a hen detects a small bit of reproductive tissue and treats it like a yolk and wraps it in a shell.
The Large Egg in the center was also laid by a Barred Rock hen.
The Egg on the right was laid by an Easter Egger who has been laying for about a year. These are generally double yolk or triple yolk eggs. Double yolks happen when ovulation occurs too rapidly, or when one yolk somehow gets "lost" and is joined by the next yolk.

 

[canada-goose]

Cool! Very pretty eggs too!

 

[redstars]

Quote:
I was wondering how double yolks happened.
Thanks.

 

[harrisville chicken]

Do you have a photo of a fart egg cracked open?

 

[TXmommy]

May be a dumb question....
~If a double yolk were fertalized, could you then have twins?
Malinda

 

[MareeZoCool]

That "fart" egg is the perfect description of the last egg my 8yo RIR hen lay. we saved it for over a month, before my curiosity got me to crack it open. nope, no stink either.

 

[urban dreamer]

@ TXmommy: you can have twins if both yolk are fertilized. It is rare if both live though.

 

[Kittymomma]

Quote:
They would be fraternal twins (two yolks, not one that split) not any different then regular clutch mates and it's very rare for both chicks to hatch-usually one or both either quit or die during hatch. There is still only one air sac so things mostly don't work out well.

 

[TXmommy]

Thanks....

 

[kathyinmo]

And what about the torpedo egg?