There is more to an egg than meets the eye - interesting egg facts

Did you know…? Interesting and curious facts about eggs.
By sumi · Dec 10, 2012 · Updated Aug 14, 2013 · ·
  1. sumi


    The more I read about chicken eggs the more amazed I am. We think of eggs as a convenient food source and added benefit of keeping chickens, as well as an essential ingredient to our breakfast fry up, but there are so much more to them than meets the eye. Did you know...?

    - According to the Guinness World Records spokesperson the largest egg laid by a (chicken) hen had 5 yolks, measured 31cm (12.2 inches) round the long axis, 22.8cm (9 inches) round the short axis and weighed nearly 340g (12 oz). He didn't say if the poor hen survived.

    - The most yolks found in one chicken egg was 9! Imagine incubating that!

    - Can't remember which eggs you've boiled and which are fresh? Spin them: the liquids in a fresh egg will cause it to wobble and a boiled egg will spin easily.

    - When dropped in water a fresh egg will sink and a stale egg will float.

    - Provided that pressure is added at the ends, not the middle of the egg, a well formed egg shell will support pressure of up to 9 pounds.

    - The record for the most eggs laid in one day by one hen is 7.

    - Chickens don't only lay white or brown eggs. Some breeds lay green/blue eggs. For a chicken breed and egg colour chart click here:

    - Egg yolks takes approximately 10 days to mature, the white is formed in 3-1/2 hours and the shell in 1-1/2 hours.

    - There is approximately 10% percent more calories in a cooked egg than a fresh egg.

    - In 1925 the average number of eggs laid by one hen in a year was 100. Nowadays the average is 250-325 eggs per hen.

    - In 1979 a white Leghorn hen set the world record for egg laying by producing 371 eggs in one year.

    - Eggs contain 13 essential vitamins and minerals and egg yolks is one of the few natural foods than contains vitamin D.

    - Contrary to popular believe, hens do not need a rooster around to make them lay eggs. The only part roosters play is fertilising the eggs. Here's pics to show the difference between fertile and infertile eggs:

    - Egg shells are very porous. An egg shell can have as many as 17 000 pores over it's surface.

    - Studies have shown that free range eggs have a higher nutrient percentage than battery eggs. Another good reason to keep your own flock for eggs!

    Nutrient Content - Battery EggsNutrient Content - Free Range Eggs
    Vitamin A - 0.97mgVitamin A - 7.37mb
    Vitamin E - 487IUVitamin E - 763IU
    Beta Carotene - 10mgBeta Carotene - 76.2mg
    Folate - 47mcgFolate - 0.71g
    Omega 3 - 0.033mgOmega 3 - 292mg
    Cholesterol - 423mgCholesterol - 231mg
    Saturated Fat - 3.1
    Saturated Fat - 2.31g

    - China is the worlds largest producer of chicken eggs with a whopping 160 billion eggs laid by their hens in a year. The US hens produce an equally impressive 65 billion eggs annually.

    - A whole egg contains approximately 3 tablespoons of liquid and the yolk itself contain about 1 tablespoon of liquid.

    - In the right circumstances a fertile egg will take 21 days to develop and hatch.

    - About 2% of all eggs are odd shaped/malformed. For mind blowing images click here: Images for odd shaped eggs images

    - When storing eggs remember that an egg ages more in one day at room temperature than in a week in the fridge.

    - Eggs are about 105*F when laid and as they cool down the liquid inside contracts, forming an air cell at the large end of the egg.

    - An egg is laid large end first and gets coated in a liquid called a "bloom".

    - You can rub off the egg shell colour if you can get to the egg just as it's been laid, before it dries off. Once it's dry though, no amount of rubbing will have any effect on the colour.

    - Who came first? The chicken or the egg? According to Canadian researchers it was the egg, since dinosaurs laid eggs and made bird-like nests long before birds (including chickens) evolved from them (dinosaurs)

    - A hen needs roughly 5 oz food, 10 ounces of water, 14-16 hours of light (artificial, natural or a combination of both) and average 25 hours to produce on egg.

    - A hard boiled egg will peel more easily if it is 1-2 weeks old before it is being cooked.

    - The ancient Chinese stored eggs up to several years by immersing them in mixtures such as salt and wet clay; cooked rice, salt and lime; salt and wood ashes mixed with a tea infusion. Some of these treated eggs exhibited greenish/grey yolks and whites resembling brown jelly. Nowadays eggs stored like this is considered a delicacy in China.

    - The most expensive "egg" ever sold was the Faberge "Winter Egg" which sold in 1994 for $5.6 million.

    - French brides break an egg on their thresholds for luck and healthy babies.

    - If you make a small hole in the fat end of an egg before boiling it the egg's contents will expand and your boiled egg will not have a flat bottom.

    - The scientific study of eggs is called "Oology"

    Now, I have an egg riddle for you: On a windless day a rooster lays an egg on the peak of the roof. Which way does the egg fall? To the bird's left or right?

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  1. Meg-in-MT
    5/5, 5 out of 5, reviewed Feb 13, 2019
    Interesting and fun read! That poor chicken...
  2. KevinWainscott
    "Good read!"
    5/5, 5 out of 5, reviewed Aug 10, 2018
    Lots of cool facts!
  3. ChickNanny13
    "Interesting ..."
    5/5, 5 out of 5, reviewed Aug 10, 2018
    :thumbsup Great article & interesting too :caf
    sumi likes this.


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  1. BirdsInParadise
    Cool article.
    The egg doesn't fall.
    It floats up.
    Because if a rooster is laying it, the whole world has been turned upside down!!!
      sumi likes this.
  2. BlackHackle
    The rooster couldn't have layed the egg at the dead center of the peak, therefore the direction of the rolling egg would depend on the displacement of its position relative to the the very nearest millimeter.
  3. Mixedbirdies
    Haha the egg doesn’t roll to either side because the egg doesn’t exist because roosters don’t lay eggs!
    1. BlackHackle
      They don't? I never knew that! I thought that was why I was getting an extra egg a day

  4. Abriana
    That was an awesome article! :thumbsup
      sumi likes this.
  5. CCUK
    Great article. The question should be 'what came first, the dinosaur or the egg?!'
      sumi likes this.
  6. bcfpilot
    Great info
      sumi likes this.
  7. sunflour
    Great article, well presented and interesting.
    Eggs also may prevent Macular Degeneration - a major cause of blindness in humans:
    Eggs Contain Lutein and Zeaxanthin, Antioxidants That Have Major Benefits For Eye Health
    Another take on the riddle: the egg can roll either way - It's a hen and not a rooster - post a pic in "what breed/gender" and likely he's a she :)
      BlackHackle likes this.
  8. locknest4
    Thank u - very informative [​IMG]
  9. Copper Creek
    Great article. Another cool fact is an egg is one of the largest single celled organism.
      Princess Lay-er likes this.
  10. SueT
    Nice article! What is the source of the nutrition chart? Surely those numbers will vary a lot depending on the amount and type of area the hens have for roaming, plus time of year, type of feed, etc.
  11. S5apiotrowski
    Enjoyed the post- thanks!
  12. Shadow920
    if one of your roosters lays an destroy it because that's how the mythical basilisk is born.
      Princess Lay-er likes this.
  13. Shadow920
    the answer to the riddle. roosters don't lay eggs.
  14. Leahs Mom
    Fresh vs. boiled.... better remember that one if I'm ever on that game show!
  15. sunflow584
  16. Mountain Peeps
    Roosters don't lay eggs!!!
    Great info Sumi!!!!!!!
  17. loveourbirds
    i keep working on a strain of egg laying roosters, but have never successfully made one.
  18. Chicks Galore3
    BIG thumbs up from me! Awesome!
  19. Happy Camper
  20. liz9910
    Great article, very informative.
  21. kelseysfowl
    roosters dont lay eggs,
  22. ShadowsFIAL
    The answer to your riddle is: No egg will fall because roosters do not lays eggs.
    Loved the info, thanks a bunch
  23. AlienChick
    Enjoyed reading this!
    And to answer your riddle: The egg does not fall to the right or the left because flying pigs will grab it before it has a chance to fall. The moral of this story is: "Roosters will lay eggs when pigs can fly!"
      Rose Quartz and JEM like this.
  24. Melabella
    Great job Sumi... love all the facts, some of which I did not know> Do you keep your eggs out on the counter, or straight to the fridge?
  25. tadpole98

    +answer to riddle+ roosters dont lay eggs, LOL
  26. Brandi Leigh
    Wow, I want leghorns!!!!
  27. chickenpooplady
    Great information!
  28. Rich386
    A welth of information.
  29. willowbranchfarm
    Really great article.
  30. cluckcluckgirl
  31. redsoxs
    Wow! What a great and informative expose' on eggs! I learned about 12 new things!! Thanks for the time and effort it took to compile this fun and informative article!!
      New2chicluv likes this.

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