Jump to content

Black yolk!!

Recommended Posts

One of my hens has laid an egg with a black yolk!! :shock: Never had this before and the hens are showing no signs of illness/sickness. I have 6 of them(hybrids) and they are about 2 years old.

Has anyone had this before or know what could have caused this?

Link to comment
Share on other sites

Found this on another site for you. Hope it answers your question


"Were they black AFTER they'd been hardboiled? Often, eggs get a coating on the yolk if they have been overcooked (boiled for too long) or the egg is a few weeks old. It is perfectly harmless and is caused by a reaction between the iron in the yolk and the sulfur in the whites. As the egg cooks, more sulfur is released from the white, and there is more of a reaction with the iron (ferrous sulfide is the result). The ferrous sulfide coats the outside of the yolk, causing it to turn black. Again, totally harmless, but a little weird looking."

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...