Will an EE and RIR or Red Star cross produce green eggs??

Discussion in 'General breed discussions & FAQ' started by chickenlover99, Oct 1, 2009.

  1. chickenlover99

    chickenlover99 In the Brooder

    Jan 16, 2009
    Central Connecticut
    Will an EE Rooster bred with a RIR have offspring that will produce green eggs? Will an EE Rooster bred with a Red Star have offspring that produce green eggs?
  2. Momo

    Momo Songster

    Mar 16, 2008
    Nelson BC
    Well, it depends on whether the EE is homozygous or heterozygous for the blue egg gene. There are two base eggshell colour genes in chickens - blue and white - and blue is dominant over white. It doesn't matter whether the EE parent is male or female. If the EE is homozygous then each offspring will be heterozygous for blue, so the underlying shell of the egg will be blue, and if they inherit a brown egg tint from the other parent (a near certainty in your case), then the eggs will be green.

    If the EE is heterozygous then only 50% of the offspring will have the blue egg gene (giving green) and 50% will have the white egg gene (giving brown because of the brown tint on top).

    Oh, and don't forget that your EE could be homozygous for the white eggshell gene because not all EEs carry the blue gene, in which none of the progeny will lay green.

    My EE roo is almost certainly homozygous because I raised a bunch of his chicks from BSL hens and all of them lay some shade of green or khaki eggs.

    Clear as mud?
  3. buck431397

    buck431397 Songster

    Aug 29, 2009
    Pilesgrove, NJ
    i'll let you know in about 15 weeks.....
  4. denasfarm

    denasfarm Songster

    Jun 15, 2008
    Sweet Home Alabama!!
    I have one EE X RIR (the red one) and one EE X Marans and they both lay green/blue eggs. very nice birds too.

  5. Goose and Fig

    Goose and Fig Grateful Geese

    Apr 19, 2009
    Fall Creek Falls TN
    denasfarm- doesn't your EExMarans lay olive eggs? Or does it have to be an EE roo x Marans to get olive eggers? [​IMG]
  6. ams3651

    ams3651 Songster

    Jan 23, 2008
    NE PA
    well, i can tell you, my EEs lay blue green eggs, their offspring (crossed with a RIR roo) lay pink eggs. Not sure how it would work in reverse.
  7. Momo

    Momo Songster

    Mar 16, 2008
    Nelson BC
    It doesn't matter which parent is which: each chicken gets one eggshell-colour gene from each parent. In your case, ams3651, I'd say your EE hens are clearly heterozygous for the blue eggshell gene and it happens that their progeny didn't inherit it. (Each chick will have a 50% chance of inheriting that gene.) A pink egg is technically a white egg with a small amount of brownish tint (makes it look pink).

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