Hi all- I have a very sick Isa Brown cross who, in the last 24 hours, has started this strange 'chattering' call while bobbing her tail and stretching out her neck. She's also very sleepy while doing this today (second video), although was not yesterday (first video). She is about 19 months old and has been sick on and off for 9 months and has not laid in that nine months either. Over the last two weeks she was looking and behaving at her healthiest within that 9 months, until 3 days ago when she's taken a sharp turn for the worse, and now this new symptom has appeared that I can't find any information on. Has anyone encountered this before / what is this a symptom of? 1) What type of bird , age and weight (does the chicken seem or feel lighter or thinner than the others.) Isa Brown, approx 19 months. 2) What is the behavior, exactly. She is clearly sick: Lethargic, puffed up, comb has been floppy for past few weeks but she's also been going through her first moult, comb and wattles pale but not purple at this stage. She will eat oatmeal/mash and is pecking at grass, but lethargic. She has not laid in 9 months and has had various periods of illness throughout, however this new 'chattering' and tail-bobbing is a new symptom and she is looking at her most unwell to date. 3) How long has the bird been exhibiting symptoms? This 'chattering' and tail bobbing symptom only in the last two afternoons (not mornings, afternoons only). 4) Are other birds exhibiting the same symptoms? No - they are all healthy and symptom free. 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 known - weather has been dry this week, all very 'normal'. 7) What has the bird been eating and drinking, if at all. Fed her the usual mash today, has not been very interested in grains past 3 days since appearing sick. 8) How does the poop look? Normal? Bloody? Runny? etc. Runny but not green (has been when previously sick but not for several weeks). 9) What has been the treatment you have administered so far? Mixed in some Aristopet oral antibiotic this morning in her mash/porridge, yesterday just garlic and spices in mash (fenugreek, mustard, aniseed, ginger), apple cider vinegar in water - all standard practice for my hens. 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? Prefer to treat myself. 11) If you have a picture of the wound or condition, please post it. It may help. Video's above. 12) Describe the housing/bedding in use Coup and fully enclosed run, shavings for droppings and hay for egg boxes - cleaned daily or every second day. Many thanks for any help.