What causes Infertile eggs to have bulls eye?

Discussion in 'Chicken Behaviors and Egglaying' started by TherryChicken, Sep 27, 2016.

  1. TherryChicken

    TherryChicken Overrun With Chickens

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    I'm curious what causes this. I've had it in the past, but never got an answer. I had no rooster with them and no rooster around them in the fertility time frame. What causes perfect bulls eye without a rooster? I tried incubating for the heck of it, knowing nothing will happen and it didnt.
     
  2. TherryChicken

    TherryChicken Overrun With Chickens

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    I still have bulls eyes, but I have a rooster now. Back then I didn't
     
  3. aart

    aart Chicken Juggler! Premium Member

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    What was your "fertility time frame"?
    They can remain fertile for up to about a month after no exposure to a cock/erel.

    I remember a discussion on this, but only recall that it is possible for an infertile egg to have the bullseye but not what causes it. Bummed me out from a hatching aspect.
     
  4. Tigman

    Tigman Just Hatched

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    I'm new to this. What is a bullseye? Do you have a picture of one?
     
  5. aart

    aart Chicken Juggler! Premium Member

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  6. TherryChicken

    TherryChicken Overrun With Chickens

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    Yes, I made a thread a couple years ago about it too. And the time frame of fertilization after roos. I never had a roo so there could be no time frame if that makes sence.
     
  7. TherryChicken

    TherryChicken Overrun With Chickens

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    I personally do not. Sorry
     

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