What is this egg...

[Jjccjess]

Our girls have been consistently laying since September .
We have 3 buff orphingtons and 3 sex links. They all lay various shades of brown.
I'm not sure who layed it but I found this white, bumpy egg today. Is this a concern or just one of those weird eggs you find?

They have access to plenty of feed and are free range. They have oyster shell and fresh water.

 

[sumi]

Those are calcium deposits. Usually caused by stress/a disturbance, or excess calcium in the hen's diet and less often, a defective shell gland.

https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

 

[EggSighted4Life]

Hi, hope you are enjoying BYC!

Could be a hiccup. All eggs are white underneath except true blue. The brown gets applied on the way out... so shade can vary by how fast or slow it went past that station in the process... just before exiting the vent. It can even be rubbed off while still wet.

I see someone has already posted the same link I was going to reference.

https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/