Chicken with swollen butt

[Ellasroo]

I got this chicken about 30 min ago from some people who needed a home asap (she was all alone). Now that i’m home with her and gave her a bath because she had poo on her feathers, I can see that her lower vent is extra large and round. She is also pooping clear-ish liquid. Any advice?

 

[Eggcessive]

I would try to rule out ascites (water belly.)

 

[fatimastic]

I got this chicken about 30 min ago from some people who needed a home asap (she was all alone). Now that i’m home with her and gave her a bath because she had poo on her feathers, I can see that her lower vent is extra large and round. She is also pooping clear-ish liquid. Any advice?
View attachment 3122670

Is her abdomen squishy and water like or hard?