lumpy eggshells

[bgsamuelson]

A few of each day's eggs (usually one or two) have lumpy shells? Their calcium intake is spot on. So what is causing this? It has only been showing up in the last week or so. Thanks in advance for your input. Georgeanne

 

[Shadrach]

Perhaps this might help.
https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

 

[Wyorp Rock]

A few of each day's eggs (usually one or two) have lumpy shells? Their calcium intake is spot on. So what is causing this? It has only been showing up in the last week or so. Thanks in advance for your input. Georgeanne

Can you post some photos of the eggs?

 

[chrissynemetz]

What are you feeding them?

 

[aart]

Yes, @bgsamuelson we need pics of eggs...
.... and to know what all and how exactly you are feeding.