Hi, my family are new chicken owners. We have 2 white Sussex hens. Recently we came back from holiday and found one of the hens incredibly ill. Whilst we were away we left her with relatives (I regret this greatly now!) And I think they told us that the hens coop would leak and get wet during the night. When we came to collect the hens, their coop in general looked nasty and damp (according to my brother). Now the youngest of here hens is obviously ill and I don't know what's wrong with her, I don't even know where to start. Shes very inactive because she's weak, she sits in one spot and when she gets up to try and move you can tell it's a struggle. She move slightly and then feels weak and slump down again. She won't eat AT ALL. Yesterday she was drinking a lot and late evening she 'vomitted' the water back out. Now I understand chickens don't vomit but I think the water came out because she was drinking a lot and eating nothing. Today it looks like she's not even drinking very much. Often he truffles to breath, like it's heavy and gurgling. Occasionally she'll suddenly wake up and shake her head like she's trying to cough something out. When she does poop its watery and slightly yellowy. Sometimes it comes out when she strains. She hasn't laid in a few months as before we went abroad she was slightly broody. I don't know how old they are since my dad bought them from a friend. I think they must be around 2-3years. Is there any hope for her? I feel so guilty for leaving them and I hate the thought of her being in any pain at all. It breaks my heart because she was the most active of the two, she would run around all day without getting tired. Please advise any medication.