1) What type of bird , age and weight (does the chicken seem or feel lighter or thinner than the others.) Black sex link, 3 yo, feels lighter than others, heavy at tail end, keel is getting sharper 2) What is the behavior, exactly. Drinking constantly, shaking head, gaping, watery loose stools, closing eyes, seems like it is hard to swallow, drools into feeder 3) How long has the bird been exhibiting symptoms? Ever since I got her 2 1/2 years ago - just the drinking part (but off and on with that) 4) Are other birds exhibiting the same symptoms? No 5) Is there any bleeding, injury, broken bones or other sign of trauma. no 6) What happened, if anything that you know of, that may have caused the situation. Nothing, except she came from what I now know to be a disreptuble store that allowed wild birds to comingle and share food. She and rest of flock developed coryza (?) respiratory and I finally successfully treated them - all four. I returned two to store at that time. 7) What has the bird been eating and drinking, if at all. Water, water water. Laying crumbles, egg (cooked) yogurt, ACV in water, 8) How does the poop look? Normal? Bloody? Runny? etc. Loose, watery. Did see one of hers that was well formed because I have a pen with a lid, she is the only one to jump up there and left her calling card which looked normal. Had to trim some feathers from vent due to soiling. 9) What has been the treatment you have administered so far? Wormed all with Wazine in January 10 ) 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? I'm trying to get her over this, can't afford vet. I have several worming meds (Iver, Safeguard, Valbazen, Wazine), hesitant to just go hog wild without knowing what to treat for. 11) If you have a picture of the wound or condition, please post it. It may help. She really appears normal when she thinks I'm watching her, except for head shaking and trying to swallow. 12) Describe the housing/bedding in use Converted old storage shed (metal), has shelving with ramp to top. Bedding is pine shavings cleaned of poop daily, so no ammonia build up at all. She had been a great layer up til just maybe two weeks ago, laying every day often for two weeks straight no break! Then suddenly she got sporadic, then stopped. Right now I think she is brooding the fake eggs. She seems to have become an internal layer, as her rear end feels spongy and slightly swollen, but not warm. Last egg was March 26. I have one other chicken (1 yo) and 3 chicks (separated) but this all started before I got the chicks. I had an older hen who I put down early Feb, she was 12 yo - a rescue. She came up lame one morning and it seemed to get worse until she quit eating / drinking. But this problem with the black sex link has me stumped. There does not seem to be any exudates from nostrils or mouth, no foaming orally, or eyes, or poop. She does gurgle a little sometimes, but not all the time. It seems like a chronic disease but has suddenly gotten worse. She does eat some, but not enough. She loves the meal worms, but won't eat the scratch I offer as a treat. Any ideas on what could be going on would sure be appreciated at this point b/c once she goes into huddle mode and stops eating/drinking, I hate to think - but she's not quite there yet. Everyone always says "worms", but after using Wazine, oh, the run is dirt they don't free range b/c of the trees drop too much debris then they get mites - plus they'll destroy my garden. Anyway, they do get greens, lettuce, cabbage almost daily. Sorry its a little disjointed - trying to think of everything here. Tried to look down throat - don't see anything unusual and no smell to her breath. Anything I didn't think of? Any ideas anyone? This is Southern California, if that makes a diff. I offerered her some chick starter, medicated, and she seemed to enjoy that and her poop firmed up (that was the one I found on top of the pen), but don't know if that really helped her as far as what is wrong.