Rough shelled egg

[Brassmaster]

We have been getting one egg a day for about a week now that is very rough on the outside. Almost like the full thickness of shell isn't getting deposited. Where it is less, it is rather thin. Any idea what is causing this? All the other eggs are fine.

 

[Ariel301]

I used to get eggs like that occasionally from my Barred Rocks I had when I was a kid. Don't know what caused it though. Maybe something to do with the calcium in their diet?

 

[chicks4kids]

I get those as well. I just put out more oyster shell and sprinkle it in their food bin as well. It has lessened.