Chicken with poppy butt

[CrazyChicken360]

Hello, recently I have been noticing one of my hens with a poppy butt does anyone know what this is?

 

[Perris]

if you mean poopy, it's probably vent gleet. Have a look at this article and compare with what your hen has
https://www.backyardchickens.com/articles/vent-gleet-aka-nasty-chicken-butt.64647/