I lost three quail in two days once before I figured out what was wrong. No injuries, no feathers missing, just birds that went from fine to hunched to dead faster than I could research what was happening. By the time I had a name for it (ulcerative enteritis, it turned out), I’d already lost the chance to treat the first two. That’s the thing about quail diseases: they move fast, the birds hide symptoms until they can’t anymore, and most of the home remedies people pass around in Facebook groups do nothing for the disease actually causing the problem.
This is the list I wish I’d had that week. Not everything that can go wrong with quail, just the diseases that actually show up in backyard flocks, sorted by what you’ll see first, with what helps and what’s a waste of time.
Which Quail Disease Is It? Start With the Symptom
Before you treat anything, figure out roughly what you’re dealing with. This table is a starting point, not a diagnosis. If you’re losing birds and can’t narrow it down, a same-day call to a poultry vet or your state diagnostic lab beats guessing.
| Disease | Main cause | First sign you’ll notice | How fast it moves | First response |
|---|---|---|---|---|
| Coccidiosis | Eimeria protozoa | Bloody or watery droppings, huddling | Days | Amprolium in water, dry the bedding |
| Ulcerative enteritis (“quail disease”) | Clostridium colinum bacteria | Sudden death with no warning signs | Hours to 2 to 3 days | Isolate survivors, call a vet about antibiotics fast |
| Respiratory disease (CRD, quail bronchitis) | Mycoplasma or viral infection | Wheezing, nasal discharge, rattling breath | Days | Isolate, improve ventilation, vet-prescribed antibiotics |
| Quail pox | Pox virus, spread by mosquitoes | Scabby lesions on feet and toes | Weeks | Mosquito control, treat secondary infection |
| Bumblefoot | Staphylococcus bacteria | Black scab or swelling on the footpad | Weeks | Epsom salt soak, clean bedding, vet if it spreads |
| External parasites (mites, lice) | Insects living on the bird | Feather loss, scratching, pale comb | Weeks | Dust bath with diatomaceous earth, clean housing |
| Internal parasites (worms) | Roundworms, capillaria, cecal worms | Weight loss despite normal eating, pale vent | Weeks | Vet-directed dewormer, sanitation |
Why Are My Quail Dying Overnight With No Warning? (Ulcerative Enteritis)
This is the one that scared me into writing this article. Ulcerative enteritis, usually just called “quail disease” because it hits quail so much harder than chickens, is caused by the bacterium Clostridium colinum. In bobwhite quail it can kill close to 100% of an affected group within two to three days of the first signs, and the first sign is sometimes just a dead bird. Survivors may hunch, ruffle their feathers, or pass watery white or bloody droppings, but plenty of birds just drop.
The bacteria spread through droppings, so a dirty cage floor, shared water, or flies moving between pens all carry it. Birds that recover can stay carriers for life, and the spores can sit on wire, wood, and old bedding for months. High stocking density makes it worse, which is one more reason crowding is such a consistent risk factor on this list.
If you catch it early, the Merck Veterinary Manual lists streptomycin as effective treatment, and bacitracin added to feed can help prevent it in a flock that’s had a prior outbreak. Neither of those is something to dose yourself without a vet, both because the margin for error is small and because withdrawal times matter if you eat the eggs. What you can do immediately: pull any obviously sick or dead birds, disinfect waterers, and don’t introduce new birds to a flock that’s had a case. For more on figuring out whether a single loss is bad luck or the start of something, see our breakdown of why quail die suddenly.
Why Does My Quail Have Bloody or Watery Droppings? (Coccidiosis)
Coccidiosis is the most common disease keepers run into, and it’s caused by Eimeria protozoa that live in the gut and spread through contaminated droppings. Damp bedding and warm temperatures are exactly what the parasite wants, which is why it hits brooders so often. Watch for bloody or watery droppings, lethargy, huddling under heat even when it’s not cold, reduced appetite, and weight loss. Young birds under six weeks are hit hardest since they haven’t built any resistance yet.
Amprolium, sold as Corid, is the standard treatment, added to drinking water for about five days. It works by starving the parasite of thiamine, so don’t also give a vitamin supplement with thiamine in it during treatment, since that can undo the medication. Prevention matters more than treatment here: keep bedding dry, clean up spilled feed and wet spots fast, and don’t let water founts turn the floor into mud. A good bedding choice helps more than people expect, and our bedding comparison covers which materials actually stay dry under a cage full of birds.
Harris Diatomaceous Earth, Food Grade, 5 lb. Dust it into bedding and dust bath sand to help control mites and lice before they get established. It won't touch coccidiosis or bacterial disease, but it's a cheap, low-effort piece of a broader sanitation routine.
Why Is My Quail Wheezing or Rattling? (Respiratory Disease)
Respiratory problems in quail usually trace back to Mycoplasma gallisepticum (chronic respiratory disease) or a viral infection sometimes called quail bronchitis, and both are made worse by poor ventilation, high humidity, dust, and ammonia buildup from a dirty cage. Signs include sneezing, nasal discharge, a wet or rattling sound when the bird breathes, watery eyes, and a noticeable drop in egg production even before the bird looks obviously sick.
Quail bronchitis mostly hits birds under seven weeks old and can be severe, with reported mortality in some outbreaks reaching 40 to 100%, mostly from secondary infection and stress rather than the virus alone. There’s no specific antiviral treatment. For Mycoplasma, a vet can prescribe tylosin, tetracyclines, or enrofloxacin, and supportive care (electrolytes, warmth, cleaner air) matters almost as much as the drug. If ammonia is part of the problem, the fix might be simpler than medication: better ventilation and a cleaning schedule that actually keeps pace with a cage full of birds cuts ammonia at the source instead of just covering it up.
Isolate any wheezing bird immediately. Mycoplasma carriers can look fine between flare-ups and still shed the organism, so a bird that recovers from a respiratory episode should probably not go back in with new hatches. Ammonia from a dirty cage floor is one of the most common things that turns a mild respiratory issue into a worse one, so cage hygiene and ventilation do real preventive work here.
What Are Those Scabs on My Quail’s Feet? (Quail Pox and Bumblefoot)
Two completely different problems cause foot lesions in quail, and mixing them up means treating the wrong thing.
Quail pox is a virus spread mainly by mosquito bites. Mississippi State University Extension notes that birds on wire floors get hit hardest, since mosquitoes can reach bare feet from underneath while the birds sleep, and that mosquito activity (and so pox cases) tends to spike in autumn as temperatures start to fall. Lesions range from a few dry scabs to, in bad cases, lost toes, and affected birds often peck at their own irritated feet and make it worse. There’s no antibiotic that touches the pox virus itself; prevention through mosquito control (screens, residual sprays around the housing) is the real fix, and treating secondary bacterial infection is the most you can do once a bird has it.
Bumblefoot is a bacterial infection, usually Staphylococcus, that gets into the footpad through a cut or repeated pressure from a hard or wire floor. It shows up as a black scab or hardened, swollen pad, sometimes with limping. Mild cases respond to a warm Epsom salt soak, gently removing the scab, cleaning the wound, and keeping the bird on soft bedding while it heals. If swelling moves up the leg or the bird won’t bear weight, that’s a vet visit, not a home project. Scalping and pecking injuries from aggressive cage mates are a related but separate issue. If you’re seeing wounds from other birds rather than footpad infections, our piece on quail aggression and scalping covers the causes and fixes.
Vetericyn Plus Poultry Wound Care Spray, 8 oz. An antibiotic-free spray for cleaning pecking wounds, bumblefoot sores, and minor cuts before they get infected. It's a first-aid step, not a cure for anything systemic like coccidiosis or ulcerative enteritis.
Could It Be Worms or Mites Instead of a Disease?
Parasites don’t usually kill quail outright the way ulcerative enteritis can, but they wear a flock down and open the door to everything else on this list. External parasites (mites and lice) cause scratching, feather loss, and pale combs from blood loss, and they spread fast between birds sharing a cage. A dry dust bath, a 50/50 mix of construction sand and food-grade diatomaceous earth, is the standard prevention and lets birds control light infestations themselves. Internal parasites (roundworms, capillaria, cecal worms) show up more subtly: weight loss despite normal eating, pale vent skin, and lower egg output over weeks rather than days. Diagnosis usually needs a fecal float a vet can run, and treatment depends on which worm it is, so this is one area where guessing at a dewormer dose is more likely to hurt than help. Nutritional deficiencies can look similar to a mild parasite load, so if your birds seem off without clear disease signs, it’s worth double-checking what’s actually in the feed and whether protein levels match what the birds need for their age.
How Do I Stop a Disease From Spreading Through My Flock?
Every source above repeats some version of the same handful of rules, because they work:
Isolate any sick bird the moment you notice something off, not after you’ve confirmed what it is. A spare cage or even a dog crate with a towel over part of it is fine for a few days.
Quarantine new birds for at least two to four weeks before they join an existing flock, longer if you can manage it. Most disease introductions trace back to a bird that looked fine at pickup.
Keep stocking density reasonable. Crowding is named as a risk factor for coccidiosis, ulcerative enteritis, and respiratory disease separately, which tells you something about how much it matters on its own.
Clean water and dry bedding do more disease prevention than any product you can buy. Ulcerative enteritis spores have been found in biofilm inside drinker lines, so periodically scrubbing waterers isn’t optional.
Don’t share equipment between a sick pen and a healthy one without disinfecting it first, and wash your hands between handling the two.
Most poultry medications aren’t labeled for quail specifically, including the ones named in this article. Dosing by bodyweight from a chicken label is a common shortcut, but confirm with a vet, especially for anything you’ll be eating eggs from during or after treatment.
The Quick Answers
Coccidiosis causes bloody or watery droppings and hits quail under six weeks old hardest, usually within three to seven days of exposure.
Ulcerative enteritis, called “quail disease,” can kill close to 100% of an affected group of bobwhite quail within two to three days of the first signs.
Quail pox spreads mainly through mosquito bites and causes scabby lesions on the feet and toes, worse on wire-floor cages and more common in autumn.
Bumblefoot is a bacterial foot infection from cuts or hard flooring, not a virus, and mild cases often respond to an Epsom salt soak at home.
Most poultry drugs, including amprolium and antibiotics, are not labeled for quail, so dosing should be confirmed with a poultry or avian vet.
New quail should be quarantined at least two to four weeks before joining an existing flock to avoid introducing disease.
A single quail dying with no warning is usually not an emergency; two or more deaths within days almost always is.
If you’re trying to sort a one-time loss from the start of an outbreak, our guide to sudden quail deaths has a fuller breakdown of causes and what to check first. If health problems are tanking your egg count specifically, why your quail aren’t laying covers the disease and non-disease causes side by side.
Sources: Ulcerative Enteritis in Poultry, Merck Veterinary Manual, Quail Pox, Mississippi State University Extension.