What Are Double Yolk Eggs? What Causes Double Yolk Eggs?

You've heard of double yolk eggs, and maybe seen one, but do you know WHY backyard chickens lay them? Here's why double yolkers are nothing to be concerned about.

[DarkAii]

Almost every eggs I've purchased had 2 yolks for the past 3 months.
I was wondering: "What are the odds? Or is it genetic mutation?"
Thanks for the info.

[ellenorbjornsdottir]

The supermarket sells me cartons of eggs with mostly double yolks.

[piyushsingh]

Nice one keep it up . Support and love from india 👍👍👍

[Isabellabronxs]

Food for thought! Thanks for clearing it up!

[KirkandRA]

I got one today in my carton at the grocery store. 😳

[karlagrecar]

thanks for the info, I always wondered but never looked it up.

[alazyotaku]

I’ll explain better, double yolk eggs means that the egg would have given two baby chicks if it was fertilised

[ivanforry]

Chickens that are just starting to lay will lay more double yolks. I explain it as the hen is just starting her cycle and may release multiple yolks that are then encapsulated (surrounded) by a shell. 2 yolks is common 3 very rare, 4 extremely rare. Breeders will try to eliminate chickens that lay more double yolks in commercial flocks. A chicken that is very mature (35 weeks plus) will rarely lay a double yolk. 1 per 1000. At 18-20 weeks 1 in 20.

[brucericciardi]

One of my hens lays an egg with double yolk on every egg..and not just on occasion..

[gummy]

Lol they made cartons with only double yolk eggs on purpose

[Emilyvang]

Omgh I had 2 yolks in one egg but it was biggger so I might have twins