It's been about 30hrs since I noticed my hen is not eating, only drinking more water than usual. She is lethargic, not dust bathing but she is still moving around just not much. She falls asleep during the day and she has a yellow runny poo with green through it but no smell. We have red mites but 95% eradicated and the other 5 hens are fine.shes 2.5 years old and not laying for a few days.