My young adult Blue Andalusian has been acting lethargic and stands to herself. I noticed this behavior on Saturday after being away from home since Wednesday. On Wednesday, everybody (14 hens) was fine and happy. I keep them in the coop 12'x12' and run 12'x20' since the hawks are out. She has been getting weaker, and was roosting on a lower bar than normal last night so I brought her inside to stay in the bathtub. I gave her a warm bath but no poop or egg came out. I brought her inside and inspected her in the bathroom. She is currently on a towel in the bathtub. Her poop is yellow and runny with a green blob in the middle. Another poop was all yellow. I poked through it and did not see worms. Her appearance and body seems fine, but she is weak and quiet. I felt for a bound up egg and felt her crop but I am not sure what to feel for. She ate some yogurt with layer crumbles mixed in, but did not drink bath water or chicken vitamin water. I got the 5 Blue Andalusians for Xmas and they are young but fully grown and are laying. They were all happy and outgoing and played well with my flock. My coop has deep litter and I mix it often, and the run is deep with mulch and hay. I have not had any chicken disease problems. A few years ago at my last house, I had a Tyson hen act this way, but she was stomped to death by a Tyson rooster before figuring out the disease or the cure. Details: 1) Blue Andalusian, 9 months, adult sized 2) She stands away from the flock, wont scratch, slouches, wont eat, drank some but not now 3) I noticed behavior 3 days ago after coming home from being away for 2 days 4) Vent clear, feathers fine, no wetness, no bugs, comb dark at edges, flopped over but it already flopped over 5) It has been freezing the past week, other 13 hens act fine 6) Layer crumbles, scratch, heated clean water available at all times 7) Poop is runny and yellow with a chunk of green goop did not see worms in it 8) Fed her yogurt with layer crumbles mixed in, water with chicken vitamin powder 9 ) I can treat her and I have several feed stores in the area, not sure about vets available 10) Dont have a picture and Im stuck at work currently 11) Deep litter in the coop, 12x12, raked frequently, roost bars, hay/mulch in 12x20 run Thank you so much for reading and offering advice.