last week one of my hens died unexpectedly. The only symptom she had was a slightly pale comb which i put down to her moult and the weather. Around the same time, my Orpington boy's comb began to turn blue at the tips. He also was showing. No other symptoms until today when his condition has drastically deteriorated. He has been inactive all day, just stood around with his feathers piffed up, although he was still eating and drinking normally. However, I just went to go lock the coop for the night and he wasn't inside, he was just stood in a corner of the run, his tail drooped down and his feathers puffed up. He didn't even attempt to struggle when I picked him up (which is usually a near impossible feat). His comb is even more blue now and has a white patch on one side. His eyes look normal, no secretions from the nostrils, there is a small amount of faeces stuck to his bottom but he hasn't been loose. I have had to put him in he coop with the others because I have no where else for him right now and I don't want to leave him out in the cold. He went straight into one of he ground level next boxes he looks like he's on his last legs, and now I'm thinking that whatever is wrong with him is probably what killed my hen and is likely to kill the rest too. I have no idea what to do to help him or to prevent the others getting sick! Please help!