I noticed yesterday that my hen's feathers were ruffled, wings hanging down, poopy bottom, just not feeling well. I brought her inside to inspect her and noticed that she has lost quite a bit of weight. I put her in my laundry room where she could be warm and put vitamins in her water. She would not drink but ate a little. This morning I noticed that the towel she had been laying on has green runny poo. She is breathing o k, not rattling or anything. No swollen face or wattles, no mucus. I got her a few years back and she was already laying eggs. I don't know how old she is, but she looks pretty up in age. She molted a few months back and just seemed to go down hill little by little. I thought maybe she was just getting to be an old lady, but up until yesterday I'm not sure. Does anyone have any idea what could be wrong with her? No other ones in the flock are sick. I'd really hate to cull but I don't like seeing her like this. She's just wasting away. Any suggestions would be greatly appreciated.