Hello. Please respond I’m new to posting but have been reading for days and gleaning much insight. My six year old bird has taken ill. She is not a layer since late last year and lives in a well ventilated 20x10 coop that is open to light and air year round with 2 other birds that are both doing fine. Butch however appears to have a sour crop. The smell is not to bad and she is able to stand but has lost allot of weight. She is not eating for 2-3 days now. I have tube fed about 6 ML of blended scrambled egg. I also tube fed about 9 ML of probiotics and electrolytes with ACV. I checked for Gape worm using the q tip method I found on here no sign of a red worm after swabbing her esophagus. After a day at the farm store of stocking up on some equine dewormer called something like flobuvent and a broad spectrum antibiotic I spoke to a chicken rep in Modesto that told me my bird did not likely have a condition caused by worms and that the best treatment was Acidified Copper Sulfate which I got and began administering last night at about 6 Mls every 2-3 hours. Some color is returned to her comb Diarrhea has changed from mostly white with Greenish black traces to mostly Greenish black with white traced. ther are no lumps or balls in the crop and it dose go down and then I reflate it with the ACS until i can here her gurgle then I back off and massage crop. The directions I found her suggest NO FOOD for the first 24 Hours. I cant bare that so she has some poached egg incase she gets interested but so far not more than a peck or two at that. Do you have any thoughts!!!! Please respond.