# Blood spot in eggs

**URL:** <https://boards.straightdope.com/t/blood-spot-in-eggs/506052>\
**Category:** Factual Questions\
**Created:** [August 11, 2009, 1:21pm UTC](https://boards.straightdope.com/t/blood-spot-in-eggs/506052 "2009-08-11T13:21:01Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![SmashTheState](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@SmashTheState](https://boards.straightdope.com/u/SmashTheState)\
**Post date:** [August 11, 2009, 1:21pm UTC](https://boards.straightdope.com/t/blood-spot-in-eggs/506052/1 "2009-08-11T13:21:01Z")

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I was eating hard-boiled eggs this morning, and came across a spot of blood in one. I was always told over the years that a blood spot in an egg means the egg was fertilized. Is that true? If so, how do they end up being fetilized in the sort of battery-farm environment most eggs are produced in these days?

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**Author:** ![Harmonious\_Discord](https://avatars.discourse-cdn.com/v4/letter/h/74df32/32.png) [@Harmonious\_Discord](https://boards.straightdope.com/u/Harmonious_Discord)\
**Post date:** [August 11, 2009, 2:07pm UTC](https://boards.straightdope.com/t/blood-spot-in-eggs/506052/2 "2009-08-11T14:07:37Z")

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Do you know where the chickens you got eggs from live and that they are kept in cages at all times?

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**Author:** ![running\_coach](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/running_coach/32/15836_2.png) [@running\_coach](https://boards.straightdope.com/u/running_coach)\
**Post date:** [August 11, 2009, 2:23pm UTC](https://boards.straightdope.com/t/blood-spot-in-eggs/506052/3 "2009-08-11T14:23:47Z")

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They’re not the [result](http://www.poultryhelp.com/bloodspots.html) of ferilization.