What's wrong with my eggs?

[somhjoy]

what are these dark spots on my eggs? Am I doing something wrong?

 

[sumi]

Mottled egg shells can be caused by:

- High humidity in the coop (make sure the coop is well ventilated)
- Disease (such as infectious bursal disease) and mycotoxins
- Manganese deficiency in the hen's diet
- Over-crowding in the coop

 

[realsis]

I've also read that this anomaly can be heredity. The could have inherited this problem. I would check all things that above post suggested if those things check out it could be from heredity. Hope this helps and best wishes.

 

[somhjoy]

thank you for the info

 

[aart]

Are they all like this al the time?
How old are your hens?

Could just be a fluke.