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Do double yolks mean twin chicks?

Discussion in 'Managing Your Flock' started by SproutGirl, Aug 6, 2008.

  1. SproutGirl

    SproutGirl Songster

    Apr 3, 2008
    Missoula, Montana
    Has anyone ever seen twin chicks hatch? I've seen double yolks in eggs before, and I've wondered if they would turn into twin chicks. Is this possible? It doesn't seem biologically possible from an egg. What is up with those double yolks?
  2. dogzrule5

    dogzrule5 Songster

    Apr 14, 2008
    Sanford, NC
    hmm - good question.
  3. Guitartists

    Guitartists Resistance is futile

    Mar 21, 2008
    Yes, double yolks will develop into two chicks, however, we (BYC) have yet to see a successful hatch due to problems with them getting out of the shell. So far, the few folks here that have attempted have lost them [​IMG] When you attempt to help a chick hatch, it can often backfire... and doubles cannot hatch on their own [​IMG]
    Last edited: Aug 6, 2008
  4. witeowl

    witeowl In the Brooder

    Aug 1, 2008
    I'm still a n00b, but have been reading up on the subject voraciously. Everything I've found says that double-yolks aren't viable. If you think about it, isn't the white there for nutrition as the chick grows inside the egg? If so, then the double-yolk eggs, not having the room for double-white, would - at best - produce two very malnourished chicks not capable of survival. Or so I would think. Feel free to point out the flaw(s) in my thinking.
  5. arlee453

    arlee453 Songster

    Aug 13, 2007
    near Charlotte NC
    It is possible to hatch them, just VERY VERY rare.... there have been several attempts here, and some recent claimed successes, but without the photo proof of two babies hatching from one egg we would like to see to call it 'legit'.

    If you decide to incubate a double yolker, please do THOROUGHLY document the hatching process....
  6. Akane

    Akane Crowing

    Jun 15, 2008
    Several have made it to hatching so it should be possible but so far noone has gotten them out of the shell successfully.
  7. Matt A NC

    Matt A NC Crowing 11 Years

    Feb 22, 2007
    Morganton, NC
    I did know of 1 guy that successfully hatch a double yolker. 1 chick was much larger, but both survived. He had photo proof, including the egg as it pipped on both ends. As adults the birds looked the same and the smaller one did catch up in size to the other.

    Normally 1 chick will die either during incubation or at hatch. When it dies the decay contaminates the egg. If left too long the 2nd chick dies. That is or course if they have enough room to develop in the first place.

    They can also grow together or 1 can partly absorb the other. This is where you get conjoined twins, 2 headed birds, or a bird with extra limbs.

    I would guess that less 5% of double yolkers have a chance of hatching. 1% or less would produce 2 healthy chicks.

  8. mango1612

    mango1612 In the Brooder

    Feb 9, 2008
    Raleigh, NC
    A few weeks ago, I saw an article about wild birds (swallows) that were attached. They had made it through hatching, but died later. They said it must have been double yolks. But whether they would all (double yolks) be attached or separate...hmm.

    Last edited: Aug 6, 2008
    BirdGirl2004 likes this.
  9. holliewould

    holliewould Songster

    May 15, 2008
    Planet Earth
    Last edited: Aug 6, 2008
  10. England

    England Hatching

    Apr 1, 2014
    It is possible but very rare. It's best to help them hatch out of the eggs. But do it very carefully

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