What is this?

[MaddChickens]

I found this inside of my chickens coop. It feels rubbery, and I'm worried it's a "cheese egg" (pus egg). Does anyone know what it is?

 

[Eggcessive]

It appears to be lash egg material. I would cut it in half and post another picture. Lash material is common with salpingitis, an inflammation of the oviduct.

 

[nuthatched]

Have you cut it open? Could be an underdeveloped yolk with an infection.

 

[Eggcessive]

Here are a couple of articles that give details about lash eggs and salpingitis:

https://the-chicken-chick.com/salpingitis-lash-eggs-in-backyard/

https://the-chicken-chick.com/causes-of-lash-eggs-salpingitis-by/

 

[MaddChickens]

Cut it open.
This doesn't look like a lash egg to me, but I've never seen one before, so IDK

 

[Eggcessive]

It looks like a lash egg. Check out the 4th to the last picture of the lash egg in this link:
https://the-chicken-chick.com/salpingitis-lash-eggs-in-backyard/