Hi I am keeping a hen for my brother that is sick. I don’t know a lot of history on her except they've had her since she was 5-6 months old and she’s now about 3 years. She is a buff orp. She was unable to get into her house to sleep on Tuesday night and slept in a storm that night so I took her home with me to see what was wrong. She is bone thin. I did a fecal on her and within 2 minutes set up only there were 100 roundworm eggs on slide. I normally wait 10 minutes. I gave her valbazen yesterday at 2:30 pm and just now she started pooping out worms at 10:30. I’ve been watching for them. I assumed one day later the worms would be dead. Her stool sample this morning was completely negative. I have read valbazen is short acting so I’m nervous that they are still alive inside of her. Can anyone confirm if this is normal? Also she appears to have some liver issues. Her urates are pretty mustard yellow. I treated her with poultry cell for iron in case she’s anemic and that’s the cause of the yellow urates but no change so far. I’ve got her on milk thistle. I’ve had good results on my own hens in the past with that. My second question is can heavy worm infestation cause liver damage? Thanks for any help.