A couple of days ago I noticed bright green/teal poop streaming down one of my chicken's rear feathers. It has now transitioned to black and gritty (old blood). I've checked for a stuck egg, nothing. Her abdomen seems a little swollen but not bad. I gave her a mix of wetted food, sour cream and apple cider vinegar. At this point I'm just hoping she'll recover because I can't find anything that describes her condition online. She is about 3yo but I have only had her for 2 weeks. She is currently in a dog crate in my garage. Any ideas? I can't find a vet who will see a chicken and in NYS I can't get antibiotics w/o a prescription.