Paratyphoid in birds is a bacterial infection that pigeon fanciers and pet-bird keepers sometimes meet, and it is one of the reasons a bird that looks 'a bit off' deserves prompt attention.
The organism behind it is a Salmonella species, and where antibacterial support is discussed, amoxicillin products such as our Amoxicillin 25% Powder and Amoxicillin 10% Powder for Birds are what keepers ask about; these are labelled for ornamental fish and pet birds only, never for poultry or food-producing birds.
Before assuming infection, check the basics: loft and cage hygiene, ventilation, crowding, fresh water and quarantine of new arrivals explain a large share of outbreaks, and a bird showing obvious signs is often already seriously unwell.
This article covers the signs that can point to paratyphoid, how it spreads, where amoxicillin sits among antibacterials, and why an avian veterinarian and the bottle label, not a guess, should guide any treatment.
What Paratyphoid in Birds Actually Is
Paratyphoid in birds is an infection caused by Salmonella bacteria, most often Salmonella Typhimurium or related serovars. It is not the same as the human food-poisoning picture, and it is not a single disease with one face: some birds carry the organism without obvious signs, while others become visibly ill, especially young pigeons and stressed or crowded birds.
Because the signs overlap with many other conditions, identifying the organism is a veterinary job. A vet may use a faecal culture or a blood test, and that matters because the choice of antibacterial depends on the organism and its sensitivity, not on what worked last season.
The word 'paratyphoid' is used loosely in fancier circles, sometimes for any enteric problem. If a bird has loose droppings, weight loss or a swollen joint, the honest answer is that several things can look like this, and only a vet can separate them.
Signs That Can Point to Paratyphoid in Birds
Birds hide illness until late, so the signs below are not a diagnosis list. They are reasons to isolate the bird, review husbandry, and contact an avian vet promptly.
Common signs include green or watery droppings, ruffled feathers, sitting fluffed up, reduced appetite, weight loss, and a reluctance to fly or race. Some birds develop swollen joints or a wing droop, and in young pigeons a swollen navel or stunted growth can be seen. In breeding birds, fertility problems and dead-in-shell chicks are sometimes the first clue.
Because Salmonella can be shed intermittently, a bird that looks recovered may still pass the organism to others. That is one reason quarantine and testing matter, and it is also why 'the bird seems fine now' is not a reason to skip veterinary advice.
If you are dealing with a wound, a crop problem or canker alongside these signs, our articles on wound infection in birds, crop infection in birds and canker in birds explain how those pictures differ.
How Paratyphoid Spreads in Lofts and Aviaries
The main routes are droppings, contaminated water and feed, and direct contact between birds. Rodents and wild birds can bring the organism in, and shared drinkers, damp litter and overcrowded perches make spread easier.
Husbandry first is not a slogan here. Clean, dry lofts with good ventilation, drinkers that are cleaned daily, feed stored away from rodents, and a strict quarantine routine for new arrivals reduce the risk more than any bottle. Our quarantine guide sets out the principles, and the same logic applies to a new pigeon or parrot as to a new fish.
Because Salmonella can affect people, paratyphoid is a zoonosis. Wash hands after handling birds or cleaning cages, keep young children and immunocompromised people away from sick birds, and if a keeper develops a fever or stomach illness after contact, they should tell their doctor about the bird. Both the bird and the keeper need professional advice.
Psittacosis is a different zoonosis but the same principle applies: a sick bird is a household matter, not just a loft matter.
Where Amoxicillin Sits Among Bird Antibacterials
Amoxicillin is a broad-spectrum penicillin-type antibacterial. In birds it is used for certain bacterial infections when a vet judges it appropriate, and it is one of the actives in our bird range. Our antibacterial classes guide explains how penicillins differ from other classes, and why matching the class to the organism is the vet's call.
Fish Mox is our flagship line, and amoxicillin is the active in both the Amoxicillin 25% Powder and the Amoxicillin 10% Powder for Birds. These are labelled for ornamental fish and pet birds only. They are not for humans, and they are not for chickens, ducks, quail, turkeys or any bird kept for eggs or meat.
Antimicrobial stewardship is not a footnote. Use antibacterials only when warranted, follow the label exactly, and finish the course as directed. Skipping or stopping early encourages resistance and helps nobody. If you are unsure whether treatment is warranted, the FAQ and our legal and regulatory page set out the limits of what a retailer can and cannot advise.
Quarantine, Testing and the Limits of a Shelf Product
A bottle from a shelf cannot identify an organism. If paratyphoid is suspected, the sensible sequence is: isolate the bird, improve hygiene, contact an avian vet, and let testing guide treatment. A vet may also advise on whether the rest of the loft or aviary needs screening, because carriers can keep the cycle going.
Quarantine is not just for new birds. A bird returning from a show or race, or one that has been to the vet, can be kept separate for a period before rejoining the group. Our quarantine guide covers the practicalities, and the treatment guide explains why the label, not a forum post, is the reference point for any product you use.
If a vet does prescribe amoxicillin, the label on the tub is the instruction that counts. We do not publish doses, mg-per-gallon figures or treatment durations, because those depend on the species, the bird's weight, the organism and the vet's judgement.
Husbandry That Reduces the Risk
Most outbreaks trace back to a handful of avoidable factors. Crowding, damp litter, dirty drinkers, poor ventilation and rodents are the usual suspects. Fresh water offered in clean containers, feed kept dry and covered, and a routine that separates new or returning birds are the basics.
Stress matters too. Long journeys, show pens, mixing age groups and sudden diet changes can all lower a bird's resistance. A calm, consistent routine is not glamorous, but it is effective.
If you keep a mixed collection, remember that these products are for ornamental fish and pet birds only. They are not for poultry or any bird kept for eggs or meat, and they are never for human use. For the bird range, see our bird antibiotics collection.
| Sign | What it can suggest | What to do |
|---|---|---|
| Green or watery droppings | Enteric infection, diet change, stress | Isolate, review hygiene, contact an avian vet |
| Weight loss and fluffed feathers | Chronic illness, poor husbandry, infection | Vet assessment; do not rely on a shelf product |
| Swollen joints or wing droop | Joint infection, injury, other causes | Vet examination; keep the bird quiet |
| Reduced fertility or dead-in-shell | Breeding-bird infection, nutrition, management | Vet and loft review; test before treating |
| No obvious signs but poor performance | Carrier state, subclinical infection | Vet advice; quarantine and screening |
Signs that can be seen with paratyphoid in birds, and what they may also indicate
Frequently asked questions
Is paratyphoid in birds contagious to people?
Yes, it is a zoonosis. Salmonella can pass from birds to people, so wash hands after handling or cleaning, keep sick birds away from young children and immunocompromised people, and tell your doctor if you develop symptoms after contact. Both the bird and the keeper need professional advice.
Can I treat paratyphoid in birds with amoxicillin from a shelf?
No. Amoxicillin is a prescription-type antibacterial in many places, and the decision to use it belongs with an avian vet who has identified the organism. Our amoxicillin products are labelled for ornamental fish and pet birds only, and the label, not a guess, is the reference for any use.
What should I do first if I suspect paratyphoid in my loft?
Isolate the affected bird, improve hygiene and ventilation, and contact an avian vet. Do not mix the bird back with the group until a vet advises it. Quarantine and testing are the practical steps that break the cycle.
Are these products safe for chickens or other poultry?
No. Our products are for ornamental fish and pet birds only. They are not for chickens, ducks, quail, turkeys or any bird kept for eggs or meat, and they are never for human use.
Why does the article not give a dose or duration?
Because dosing depends on the species, the bird's weight, the organism and the vet's judgement. We do not publish doses, mg-per-gallon figures or treatment durations. Follow the label on the bottle and your vet's instructions.
Where can I read more about bird antibacterials?
Our antibacterial classes guide explains how the classes differ, and the bird antibiotics collection lists the products we stock. For legal and regulatory limits, see the legal page.
My Fish Mox supplies Aqua Soma Labs antibacterials for ornamental fish and pet birds: one named active per bottle, factory-sealed, with the lot code and expiry printed on the label, dispatched the same business day. See the full range.
For aquarium and avian use only. This article is general husbandry information, not veterinary advice and not a dosing instruction. These products are not for human consumption and not for animals raised for food. Follow the label on the bottle, and consult an aquatic or avian veterinarian, who can identify the organism and advise on the correct product, dose and duration. See our legal and regulatory information.