I had 7 girls untill a few days ago. Three of them are younger chickens and 4 older chickens about 3 years old. I doubt that they are laying. But they're my daughters pets. Last week I had one of the 4 older brown chickens die. She seemed to be puffed up and listless. Her eyes went shut all the time and it seemed that she was sleeping. In a matter of a week she died. Now I have another one doing the same thing. She also has wet poops. Anyone have a handle on this problem? Please let me know. Seems to be a virus of sorts? Thanks.