liver problems?

Hello, thank you for reading! My polish chicken Jolene, about 2 years old, was standing with her tail down and acting lethargic so I brought her inside. Thought she just needed a haircut, but it didn’t help. Inside I noticed she was pooping watery/mucousy textured diarrhea, yellow/faintly...

Is this normal? What could cause this? A good amount of yellow liquid came out while she was laying. The liquid smelled and looked like pee. There wasn’t anything sticky in it and she’s acting fine though. Her poop is usually dark brown because of her main feed and it’s often dry. It’s been...