Bloody Droppings (Coccidiosis) in Quail
Blood in the droppings of chicks or growers is coccidiosis until proven otherwise — start amprolium (Corid) in the water for the whole group the same day. Speed decides the outcome.
Coccidiosis is the classic killer of young quail between roughly two and eight weeks old. It's a microscopic gut parasite that every soil and every brooder eventually hosts; chicks with no immunity yet get overwhelmed, the gut lining bleeds, and you see hunched, fluffed chicks with bloody or mucousy droppings. It escalates over days, not weeks — but the standard treatment works remarkably well when started at the first bloody dropping.
What causes it
Coccidia oocysts thrive in warm, damp, crowded bedding — a wet brooder corner is a nursery for them. Chicks raised on wire meet fewer oocysts (and build less immunity); chicks on litter meet more. Stress, chilling, and overcrowding tip exposure into disease. Adult birds are usually immune carriers who seed the environment.
What to do right now
Treat the whole group, not just the sick chick: amprolium (sold as Corid) in the drinking water — the standard course is the strong dose for 5 days, then a follow-up preventive dose for another week; make it the only water source. Corid works by starving the parasite of thiamine, so skip B-vitamin supplements during treatment (they'd feed the parasite) and give vitamins after the course ends. Meanwhile dry out the brooder: full bedding change, fix leaks and spilled waterers, reduce crowding. Support the sickest chicks warm and hand-water them. Improvement usually shows within 2–3 days; finish the full course anyway.
When it's a vet problem
Chicks dying within a day of first symptoms, blood continuing past day 3 of Corid, or an affected group over 8 weeks old (less typical — worth confirming the diagnosis).
Preventing it next time
Dry litter above all — dampness is the disease. Either use medicated game-bird starter (amprolium-dosed) or plan deliberate gradual soil exposure so immunity builds slowly. Don't mix age groups in one brooder, and rest/refresh brooders between batches.
Dealing with bloody droppings (coccidiosis) right now?
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Related symptoms
A note from one keeper to another: this guide reflects established quail-keeping practice and first-response care, but it isn't veterinary medicine, and no article can examine your bird. When a symptom is severe, worsening, or just doesn't add up, a qualified avian or poultry veterinarian is the right call — and for emergencies, call one first. Your state's poultry diagnostic lab is also a keeper's best friend when losses need real answers.