Hi- I noticed one of our Americaunas laying down in the run today. I picked her up and set her inside the coop...she stood a moment and then laid down again. She is not moving much at all, and has her head kind of sunk in her feathers (her neck is all tucked in) and her feathers are all fluffed. I tried to feel her abdomen for an egg...couldn't really feel anything..just soft belly. She ate a bit at the end of the day, but then laid down again in a corner. I don't see any any other symptoms of anything wrong. The other hens are acting fine. Anything I should try? I put a little cider vinegar in the waterer. They are not free range..but we give them lots of food scraps...could it have been something she ate? Her comb looks a little lighter, but she's always had a lighter comb....any ideas? Thanks.