Lauryn Dell
Birds are experts at hiding illness. In the wild, any visible sign of weakness makes an animal a target for predators. Because of this, birds instinctively mask symptoms until they’re seriously unwell.
This means the signs of respiratory infection in pet birds are often subtle at first, then seem to appear “suddenly” once the illness is already advanced.
Knowing what to watch for and acting quickly when you spot it can genuinely make the difference in outcome.
Here’s what a respiratory infection actually looks like in a pet bird, and when it’s time to call an avian vet.
Why respiratory issues in birds are always taken seriously
Birds have a highly efficient respiratory system built around air sacs that extend throughout the body cavity, not just a pair of lungs.
That means a respiratory infection doesn’t necessarily stay contained. It can spread into the air sacs, abdomen, and even bones.
So a bird that seems to be “just coughing a little” may already be dealing with a more significant infection underneath.
Because of this, most avian veterinarians treat any of the signs of respiratory infection in pet birds as an urgent, same-day concern rather than something to watch and wait on.
The key signs to watch for
Breathing changes
- Tail bobbing with each breath. This up-and-down movement is a bird’s way of compensating for labored breathing, and it’s one of the clearest signs of respiratory distress.
- Open-mouth breathing at rest. Unless your bird is overheated or has just been active, breathing through an open beak while resting is a genuine red flag.
- Wheezing, clicking, or squeaking sounds when your bird breathes in or out.
- Exercise intolerance — tiring, panting, or struggling to breathe after activity that never used to bother them.
Nasal and eye changes
- Discharge from the nares (nostrils) or watery, crusty, or puffy eyes. Healthy nares should be clean and dry, so any crusting, wetness, or color change is worth a closer look.
- Frequent sneezing. Occasional sneezing is normal for birds, but frequent or persistent sneezing is one of the more common early signs of respiratory infection in pet birds.
Behavior and posture changes
Respiratory infections often show up as behavioral shifts before anything else does:
- Sitting fluffed up, with the head tucked or wings drooping
- Becoming unusually quiet — a normally vocal, chatty bird going silent
- Sleeping more than usual or seeming lethargic
- Loss of appetite or noticeable weight loss, which can happen quickly given how fast a bird’s metabolism runs
- Reduced activity or general disinterest in things that normally get their attention
Any one of these signs alone can be easy to dismiss as your bird just having an “off day” — but when a few of them show up together, it’s a stronger signal that something is genuinely wrong.
What causes respiratory infections in pet birds
Respiratory infections in pet birds can stem from bacterial, viral, fungal, or environmental causes:
- Bacterial infections, including Mycoplasma and Chlamydia (the cause of psittacosis, or “parrot fever”), are common culprits. Notably, birds like budgerigars and cockatiels can sometimes carry these organisms without showing obvious symptoms, which is part of why routine avian wellness checkups matter even for birds that seem healthy.
- Fungal infections, such as aspergillosis, are especially common in birds kept in damp or poorly ventilated environments, and symptoms can closely resemble other respiratory illnesses, making a vet diagnosis essential.
- Viral causes, including Newcastle disease and other avian viruses, can also produce respiratory symptoms, sometimes alongside more severe neurological signs in advanced cases.
- Environmental toxins are a genuinely important and often overlooked cause. Cigarette smoke, aerosol sprays, oil-based paint fumes, and especially overheated non-stick (PTFE/Teflon) cookware can cause sudden, severe respiratory distress or even sudden death in birds — non-stick cookware and Teflon-coated appliances should never be used around pet birds.
When to call an avian vet
Given how well birds hide illness, the safest approach with any of the signs of respiratory infection in pet birds covered above is to treat them as an urgent concern rather than something to monitor for a few days.
Open-mouth breathing at rest, in particular, warrants same-day veterinary attention — birds can decline quickly once breathing becomes genuinely difficult.
When you call, be ready to describe:
- Which symptoms you’ve noticed and how long they’ve been present
- Any recent changes in diet, environment, or cage cleaning
- Whether other birds in the household are showing similar signs
A vet visit for suspected respiratory illness typically starts with a physical exam. Your vet will listen to your bird’s breathing and check the nares and eyes for any changes.
From there, they may also run blood tests, take nasal or choanal swabs, or use imaging like X-rays to help identify the underlying cause.
A note on human health
Psittacosis, one of the bacterial causes of respiratory illness in pet birds, is zoonotic, meaning it can spread from birds to people and cause flu-like symptoms.
If your bird is showing respiratory signs, wash your hands thoroughly after handling them or their cage, and mention your bird’s illness to your doctor if you develop a fever or cough yourself.
The bottom line
The signs of respiratory infection in pet birds range from obvious — wheezing, tail bobbing, open-mouth breathing — to easy to miss, like quietness, fluffed feathers, or a skipped meal.
Because birds are so good at masking illness, it’s always safer to treat these signs as urgent and get your bird to an avian vet quickly rather than waiting to see if things improve on their own.
Frequently Asked Questions
Common signs include tail bobbing with each breath, open-mouth breathing at rest, wheezing or clicking sounds, nasal or eye discharge, frequent sneezing, fluffed-up feathers, reduced vocalization, and loss of appetite.
Not always — tail bobbing can be normal briefly after exercise.
However, tail bobbing that happens with every breath at rest is a common sign of labored breathing and should be checked by an avian vet.
Birds instinctively hide illness because showing weakness would make them vulnerable to predators in the wild. This means symptoms often appear subtle at first and can seem to worsen suddenly once the infection is more advanced.
Yes. Overheated non-stick (PTFE/Teflon) cookware releases fumes that can cause sudden, severe respiratory distress or death in birds. Non-stick pans and Teflon-coated appliances should never be used around pet birds.
Yes, most avian veterinarians treat respiratory symptoms in birds as an urgent, same-day concern, since a bird’s unique air sac system can allow infections to spread quickly beyond the lungs.
In some cases, yes. Psittacosis, a bacterial cause of respiratory illness in birds, is zoonotic and can cause flu-like symptoms in people. Wash your hands after handling a sick bird and mention the exposure to your doctor if you develop symptoms.
Contact an avian veterinarian promptly, isolate the bird from other birds in the household if you have more than one, and avoid giving any over-the-counter medication unless specifically directed by a vet, since birds process medications very differently from mammals.
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