I'm at my wits end, I lost another guinea overnight. I've lost around 4 over the past few months, the same symptoms, I notice one is not acting right, and separate it if I can catch it, or when it gets sick enough to be able to grab it, keep it under a heat lamp, but I know its a lost cause, I've not managed to save one that has got sick so far. I've treated the whole flock with antibiotic stuff in their water, put them onto medicated feed - and they all look fine and are driving me crazy with their antics, and wham, all of a sudden another one is looking lethargic, head tucked under, then wandering around not as manic as the rest, so I know its sick. Right now I have 2 that are not right and obviously going down with the same 'thing' - I managed to catch one this evening and have her under the heat lamp in my tack room (and its not even seriously cold here) and I can't grab the other one, she/he is still moving fast enough for me not to be able to catch it. The flock all look SO healthy, and suddenly one gets sick with the same symptoms, its heartbreaking - the coop is clean and dry, what on earth can I do to knock whatever is causing my guineas to die weeks apart. My vet has no experience of guineas or fowl, I've been in there practically begging for help!