Sorry that your chicken died. New members do not always know to start new threads of their own, but being kind instead of calling their question “ridiculous” is not going to win fans. I believe when you asked them not to hijack your thread, they got the message. Most of us here try to suggest possibilities, and things that may help. We don’t stay online constantly, and may suggest different things and treatments. We have all lost young birds to mysterious illnesses, but getting the necropsy may help tell you what was wrong. I would try to find another vet in your area that will do fecal floats for less. Mine has started charging $48 which is a lot higher that it used to be. Some folks learn to do their own with a microscope. Since you had a coccidiosis outbreak before, there could be a chance that he had poor immunity and maybe got it again. There are some Corid resistance with coccidiosis, and sulfa antibiotics can be used. I hope that you get some answers about your cockerel with the necropsy.