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Avian Respiratory Infection
Respiratory disease is one of the most common health problems in pet birds. Birds have highly efficient but sensitive respiratory systems. Infections can quickly become serious due to their unique anatomy.
Last updated: 2026-05-05
Severity
moderate
When to Act
See Vet Today
Symptoms & Signs
Tail bobbing
Rhythmic up-and-down tail movement with each breath — a sign of respiratory effort.
Nasal discharge
Clear, cloudy, or crusted material around the nares (nostrils).
Sneezing or coughing
Frequent sneezing; may produce discharge. A "click" sound when breathing.
Voice change
Hoarse, quieter, or lost voice — indicates involvement of the syrinx (voice box).
Open-mouth breathing
Breathing with beak open — sign of severe respiratory distress.
Behavioral Changes to Watch For
Pets can't tell us what's wrong. These behavioral changes are often the first clues that something is wrong.
🐾 Fluffed feathers and lethargy
Bird stays puffed up, inactive, and may sleep more.
What You May Notice:
Your normally active bird is quiet, fluffed, and stays at one perch for hours.
Causes & Risk Factors
Causes
- •Bacterial infection (Chlamydia psittaci — psittacosis; Mycoplasma; various gram-negative bacteria)
- •Fungal infection (Aspergillosis — especially in birds with poor husbandry)
- •Viral infection (Avian bornavirus, Pacheco's disease)
- •Vitamin A deficiency leading to squamous metaplasia of respiratory epithelium
- •Inhaled irritants: cigarette smoke, Teflon fumes, air fresheners, candles
Risk Factors
- ⚠All-seed diet (vitamin A deficiency)
- ⚠Poor ventilation and dusty environment
- ⚠Exposure to cigarette smoke, cooking fumes, or aerosols
- ⚠Stress (recent move, new cage, new pet)
- ⚠Malnourishment and weakened immune system
- ⚠Contact with infected birds
How It's Diagnosed
- 1Physical examination — assess respiratory rate, effort, and upper airway
- 2Choanal swab for cytology and culture
- 3Blood work including Chlamydia/Psittacosis testing
- 4Radiographs to evaluate lungs and air sacs
- 5Tracheal or sinus endoscopy in chronic cases
Treatment Options
Antibiotic or Antifungal Therapy
Based on culture and sensitivity or the most likely pathogen.
Steps
- 1.Doxycycline — first choice for Chlamydia (psittacosis)
- 2.Enrofloxacin — for gram-negative bacterial infections
- 3.Itraconazole or voriconazole for aspergillosis
- 4.Nebulization with antibiotics or antifungals for deep respiratory tract involvement
- 5.Treatment typically 14-45 days depending on the pathogen
Expected Outcome
Clinical improvement within 3-7 days with appropriate therapy.
Precautions
- !Doxycycline can cause GI upset
- !Complete the full course — even if the bird looks better
Supportive Home Care
Critical for recovery.
Steps
- 1.Warmth: maintain 85-90°F (29-32°C) ambient temperature
- 2.Humidity: use a humidifier or place the cage in a steamy bathroom
- 3.Remove all respiratory irritants: no smoking, no candles, no cooking near the bird
- 4.Ensure the bird is eating — offer favorite foods, possibly hand-feed if needed
- 5.Keep the cage extremely clean
Expected Outcome
Improved comfort and breathing while medications take effect.
Precautions
- !NEVER use Teflon/non-stick cookware around birds — the fumes are instantly fatal
Common Medications Used
| Medication | Usage | Important Notes |
|---|---|---|
| Doxycycline | First-line for psittacosis (Chlamydia) in birds | Can be given orally, in water, or via injection. Treat for 45 days for psittacosis. |
| Enrofloxacin (Baytril) | Broad-spectrum antibiotic for gram-negative respiratory infections | Commonly used in avian medicine. Oral or injectable. |
Prevention
- ✓Feed high-quality formulated pellets (not all-seed diet)
- ✓Provide foods rich in vitamin A: sweet potato, carrot, dark leafy greens
- ✓Good ventilation without drafts
- ✓No smoking, candles, air fresheners, or Teflon near birds
- ✓Quarantine new birds for 30-45 days
- ✓Annual wellness exams including screening for common diseases
When to See a Veterinarian
- ⚠️Tail bobbing — early but critical sign
- ⚠️Voice change or loss
- ⚠️Nasal discharge
- ⚠️Open-mouth breathing — EMERGENCY
Frequently Asked Questions
Is psittacosis contagious to humans?
Prognosis
Good with prompt treatment for bacterial infections. Guarded for fungal infections (aspergillosis) or psittacosis caught late. Vitamin A deficiency-related respiratory issues improve dramatically with dietary correction.
References
- [1] Harrison's Avian Medicine
- [2] AAV — Avian Respiratory Disease
- [3] CDC — Psittacosis
Related Conditions
Avian Fatty Liver Disease (Hepatic Lipidosis)
Excessive fat accumulation in the liver, most commonly caused by an all-seed diet. Particularly common in budgies, cockatiels, and Amazon parrots. Preventable through proper nutrition.
moderateFeline Asthma (Allergic Bronchitis)
A chronic inflammatory respiratory condition similar to human asthma. Affects 1-5% of cats. Causes coughing, wheezing, and difficulty breathing. Manageable with proper treatment.
moderateSnuffles (Pasteurellosis) in Rabbits
A highly contagious bacterial respiratory infection caused primarily by Pasteurella multocida. The "common cold" of rabbits — but much more serious. Can become chronic and spread to other organs.
moderateEgg Binding in Birds
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severe