Ok, I'm thinking this is probably Mareks, as we had a bantam we suspect had it a couple months ago. BUT, some things are different, so I want to be sure. The last bird never had diarrhea, and never really looked like she wasn't feeling good - she just lost movement but was always "bright". This lady is clearly NOT FEELING WELL. 1) What type of bird , age and weight. 1year old Isa Brown 2) What is the behavior, exactly. Acting punky last few days, head sunk down. Eating/drinking normal. Yesterday, noticed her stumble and saw wings beginning to droop, so I removed her. SHe's eating and drinking. Seems to be drinking a lot of water, but not surprising with diarrhea. 3) Is there any bleeding, injury, broken bones or other sign of trauma. No. 4) What happened, if anything that you know of, that may have caused the situation. We wormed the flock earlier this summer, have dusted the coop for mites, and have been adding vitamins to their food/feeding them yogurt, applesauce/vitamin mix several times a week. Also mixed scratch. 5) What has the bird been eating and drinking, if at all. Layena crumbles and whatever they catch free ranging typically several hours a day. 6) How does the poop look? Normal? Bloody? Runny? etc. Watery - looks just like the pics of a chicken that is "too hot" - but we're in Michigan, their coop is in the shade most of the day, and it hasn't hit about 73 in days... No blood. Dirty vent, but not blocked. 7) What has been the treatment you have administered so far? Separated from other chickens. 8 ) What is your intent as far as treatment? For example, do you want to treat completely yourself, or do you need help in stabilizing the bird til you can get to a vet? Can't find a vet in our area that takes care of chickens, so I'm on my own. 9) If you have a picture of the wound or condition, please post it. It may help. 10) Describe the housing/bedding in use Pine shavings in coop.