Why is hens producting Bulls eye like oval shapes on different hens eggs??? it's winter here

Discussion in 'Chicken Behaviors and Egglaying' started by Bunnyla, Jan 9, 2017.

  1. Bunnyla

    Bunnyla Chillin' With My Peeps

    May 5, 2014
    I will post some pictures, At first I saw only one hen's egg this way, now I have seen all 3 hens eggs have a bulls eye white design on one side of the egg... originally I thought t was cause they were laying near the heat lamp, but the other day it was found in the nesting box. recently the bedding of shavings has a mix of a saw dust powder look to it?
    Should I be Concerned? are those eggs eatable? it has been getting cold lately in the 20 and teen degrees and I have one heat lamp in the coop.
    Please let me know your thoughts????

  2. donrae

    donrae Hopelessly Addicted Premium Member

    Jun 18, 2010
    Southern Oregon
    I don't think it's the hens, I think it's the environment. Are the boxes or wherever the eggs are damp at all?

    And yep, they should be fine to eat. Even if it were the hens, shell quality issues don't effect egg quality.
    Last edited: Jan 9, 2017
  3. MasterOfClucker

    MasterOfClucker Chillin' With My Peeps

    Jul 19, 2016
    1. White banded egg

    These eggs are the result of two eggs entering and making contact with each other in the shell gland pouch. When this happens, normal calcification (egg shell formation) is interrupted and the first egg that entered the pouch will get an extra layer of calcium, seen as the white band marking. Causes for this are:

    - Stress in the flock;

    - Changes in lighting, for example adding artificial light in the coop to encourage laying over winter;

    - Diseases such as infectious bronchitis.


    link- https://www.backyardchickens.com/a/common-egg-quality-problems

    I would turn the heat lamp off as the link said those eggs can be due to artificial lighting.
    Last edited: Jan 9, 2017
  4. Blooie

    Blooie Team Spina Bifida Premium Member

    Feb 25, 2014
    Northwestern Wyoming
    My Coop
    @MasterOfClucker I don't know what you planned to say but I love your avatar! [​IMG] I have this "thing" for hummingbirds I guess!

    @Bunnyla Did you ever eat an M&M with a slightly odd looking candy shell? Yep, it's like that! [​IMG] But I do agree with @donrae to check your nests for dampness.
  5. MasterOfClucker

    MasterOfClucker Chillin' With My Peeps

    Jul 19, 2016
    Sorry i kept changing it.Its back now.Thanks!
  6. aart

    aart Chicken Juggler! Premium Member

    Nov 27, 2012
    SW Michigan
    My Coop
    Ditto Dat^^^^

    Don't think it's the same as the 'white banded eggs' cited.

    Open 'em up and see how they look, both contents and interior of shell.
  7. bobbi-j

    bobbi-j Flock Master Premium Member

    Mar 15, 2010
    On the MN prairie.
    I agree with Donrae and Aart. Looks like moisture on the shell to me.

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