Will store bought chicken eggs hatch?

  • I'm a bit scared to try it, because I'm not sure what would be worse--cracking open a rotten egg, or having to figure out what to do with a chick.

    So how about it? If I leave chicken eggs out, will they eventually hatch if kept at the right temperature?

    EDIT - Sorry for the confusion. I was referring to store bought eggs only.

    Can you give a bit more info? How old are your chickens? Are they incubating? You have a rooster, I hope? You normally don't have to crack open an egg, so no worries about a rotten egg.

    You can sometimes find fertilized eggs in grocery stores (or health food stores). I have no idea if they would ever hatch, though, because they spend quite some time at temperatures not exactly suited to chick development.

    @Marti: Chilling a fertilized egg will kill the germ. Fertilized eggs intended for hatching should be kept at about 50-65F until they are incubated. Incubation temperature is 99.5F.

    As recently as the 1980s, you would very occasionally find an egg containing a foetus in a shop-bought box. Producers check by holding the egg to a bright light. Nowadays that process is automated.

  • bikeboy389

    bikeboy389 Correct answer

    9 years ago

    If you're getting your eggs from a supermarket, they won't hatch. This is the case with eggs you get for eating from almost any source.

    Hens lay eggs even if they haven't been, umm, mating with a male. Any egg laid in those circumstances will never hatch because it's unfertilized, and that's the standard practice for any commercial egg operation.

    Now if you have a free ranging hen and a rooster too, and they're not kept apart, then yeah, you could get a fertilized egg. And that egg needs to be kept properly warm to hatch.

    Does chilling the egg, even if it is fertilized, irrevocably kill the embryo?

    As long as you don't keep it chilled for too long, answer is: No, it usually just slows down the development of the embryo, so it is possible to slightly adjust the "birthday" of the chick by adjusting the temperature.

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