Misshapen eggs

[LAGelinne]

My almost two year old Speckled Sussex (I’m pretty sure she’s the one)has been laying eggs that have a raised ridge all around the midsection of the egg with tiny cracks in the ridge. She seems just fine and lays one like this at least once a week. She has layer feed, access to oyster shell, scraps and she free ranges. Ideas?

 

[BlueBaby]

Maybe something here will help you to discover what's wrong and how to correct it?:

https://content.ces.ncsu.edu/factors-that-can-affect-egg-quality-and-appearance

 

[aart]

Here's another:
https://www.backyardchickens.com/articles/common-egg-quality-problems.65923/

My almost two year old Speckled Sussex (I’m pretty sure she’s the one)has been laying eggs that have a raised ridge all around the midsection of the egg with tiny cracks in the ridge. She seems just fine and lays one like this at least once a week. She has layer feed, access to oyster shell, scraps and she free ranges. Ideas?

Does she also lay 'normal eggs'?
Would be good to find out who is laying the wonky ones...hard to do if you don't have time to 'nest stalk'.

That egg shell has been 'broken and repaired' in the shell gland.
She could be stressed or not absorbing enough nutrients for good shell making or have a wonky shell gland.
Did she molt and stop laying over the fall/winter?
Has she just started back up laying after her winter break?