2 full days since my 12 week old pullet exhibiting signs of sickness. I have isolated her and am offering her plain yogurt, boiled and minced egg yolks, apple sauce, a little bit of canned fish cat food as well as her grower crumbles. She has had water w/dissolved electrolyte/vitamin powder (yesterday) and water w/apple cider vinegar added (today) -Still eating and drinking though non-vigorously -In general no vigor/slow motion Very slow and tentative movement. She does walk around but very slow and carefully -The one time (over the past 2 days) that she did try to move quickly she stumbled Unsure footing Flares wings & Wags tail feathers often to rebalance (I think) when walking -No signs of respiratory illness No rasp, no fluids near nose or eyes -Crop seems to have unloaded overnite although it wasn't extremely full -Initially upon getting up this morning she seemed obsessed w/ her left foot -Feathering fairly full at this time but still slightly rough Is losing occasional small feathers but not major -No visible signs of mites or fleas -No visible signs of worms in poop Appearance alone she seems fine Behaviorally, not right. I'm baffled by this. Any thoughts/advice would be greatly appreciated?