What did she lay?

[Curlyroars]

What is this? One of my hens hasn’t been laying for a while and laid this today. Any ideas?

 

[Eggcessive]

That is a lash egg, material coming from her oviduct due to salpingitis inflammation. Antibiotics may or may not help. Here is some reading about it:
https://www.thepoultrysite.com/disease-guide/salpingitis

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