One of my hens is very lethargic, and seems to be pooping out egg-like substances (the inside and yolk of the egg, not the shell) and dirrhea. She also has some poop stuck to her butt and tail. She hasn't been eating much, but today she drank water for almost 5 minutes straight. I picked her up to move her yesterday, and when I put her back down, she fell to the side and stumbled for a few seconds (and I put her down very carefully). She has been like this for two days now, with not much improvement. My flock has been recently attacked by a predator, and two chickens were killed. Is my hen sick, stressed, or could she have internal injuries from the predator attack (there's no external injuries)? Thanks for any help!