We have (had) a very small flock. Six weeks ago, 1 of our hens got sick and about a week later, died. I had wormed her, fed her yogurt, buttermilk, scrambled eggs, anything I could possibly think of to entice her to eat...but she still died. Two weeks later, another one got sick. I took that one to the vet. The vet said she had peritonitis of unknown origin and drained 1/2 a pound of fluid from her abdomen, put her on antibiotics, and sent her home with me. $100 and a week later, she died anyway. This morning, a third one started acting oddly. I noticed that she had made quite a mess in the henhouse overnight with runny poo. Tonight, she died That quickly. What is going on?! That's 3 of our 5 hens. I know that someone is going to suggest I take this last one to get a necropsy. But the closest spot is an hour and a half away. They were all 3 different breeds, different ages (1 1/2 - 3 1/2 years), only signs were runny poo and loss of appetite with last one. She did NOT have any sign of peritinitis. I don't know about the first one - I didn't know to check. I just thought she felt bad because of being wormed. And, yes. We are seeing hookworms in their poo. These are 2 of the 3 that are gone.