I have an ISA Brown hen around 18 months old who about 1 week ago began to stay in the coop, seemed lethargic, ate little, greenish diahrroea. My vet says he can't help much with chickens and it's a way to the only one he could refer me to... and to be honest I don't want to spend a lot. But neither do I want the bird to suffer. We are not sure whether we should we should euthanase her or try to nurse her through whatever is happening. She's got worse and at times I've thought she was close to death - then she'll pick up. Her vent is dirty but her eyes seem clear. I've been giving her water with antibiotic powder mixed in by syringe and she is keen on that. Had a little boiled rice yesterday morning but nothing since. I have separated her and she's in a dog crate on our back deck. She doesn't seem to move much but nor does she seem distressed per se - just sits there. I clean her cage out every day and feed her water several times a day. Her left leg seems useless and her wings are reasonably limp though she can move them a little. I hadn't wormed her for a while but did so last week (when I first noticed she was off colour). She eats a purchased chicken feed, not layer pellets but perhaps a 'scratch mix' - used to leave out shell grits but they were never consumed so stopped doing that. I have 3 chickens and the other 3 seem fine and are laying ok. I'm concerned I might be just allowing her to starve to death and don't want to do that. But if a little effort will bring her through, then I will do that. Am I being unreasonable as I'm not prepared to have expensive tests run on her? Is she suffering? What causes paralysis like this? I'm (obviously) pretty clueless about all this, and its made me realise how 'hazardous' (to the chooks) it is have a cute habit of keeping a few chickens for eggs without knowing very much at all about them. Would appreciate any comments.