Yesterday one of my Delaware-New Hampshire hens around 7-8 months old started acting oddly, it would not leave the coop and would stand around by itself fluffed up, most notably it would not go on a roosting pole at night. I noticed this first yesterday at night and I quarantined it today in the morning. Here are some symptoms that I have noticed: Not alert, does not move, her tail is down, feathers are semi fluffed up, poop is white diarrhea, lots of clear fluid oozing from nostrils or mouth (unsure because it happened once in front of me). She isn't eating a lot nor drinking as much as usual. No other chickens are displaying these symptoms and I have not treated this chicken yet as I do not know what is wrong with it but I do intend to treat it myself. I will update with pics later today or tomorrow. Can anyone shine some light on this?