COMPANION BIRDS · OWNER EDUCATION
Aspergillosis in Birds
Aspergillus fungi can infect the airways and air sacs, especially when birds are stressed, immunocompromised or exposed to heavy mold contamination.
THE SHORT VERSION
Understanding supports better veterinary conversations.
Aspergillus fungi can infect the airways and air sacs, especially when birds are stressed, immunocompromised or exposed to heavy mold contamination. The same outward signs can occur with several diseases, so an examination and appropriately selected testing are important.
What is this condition?
Aspergillus fungi can infect the airways and air sacs, especially when birds are stressed, immunocompromised or exposed to heavy mold contamination. The same outward signs can occur with several diseases, so an examination and appropriately selected testing are important.
Which animals can be affected?
Risk factors, examination findings and management can differ between species and individual patients.
Why can it happen?
- Inhalation of fungal spores from contaminated organic material or environments.
- Poor ventilation, stress, nutritional deficiency or immune compromise may increase risk.
What might an owner notice?
- Voice change, breathing effort, tail bobbing or exercise intolerance.
- Weight loss, reduced appetite or nonspecific weakness.
How is the problem investigated?
- Avian examination with imaging, endoscopy, cytology, culture or antigen testing as appropriate.
- Results must be interpreted together because no single test answers every case.
What might treatment involve?
- Long-term antifungal therapy and supportive care.
- Correction of ventilation, hygiene and underlying health problems.
This is an overview, not a prescription or a recommendation for a specific individual animal.
What can owners do at home?
- Write down when the problem began and track appetite, drinking, waste, activity, breathing and medication use.
- Bring clear photos or short videos when they can be taken without stressing the animal.
- Follow the veterinary team's instructions for medication, feeding, isolation, environmental changes and rechecks.
Avoid actions that could make care less safe.
- Do not use human medication, leftover antibiotics or another animal's treatment without veterinary direction.
- Do not force food or water into an animal that cannot swallow normally, is struggling to breathe or may have an obstruction.
- Do not delay veterinary care when pain, breathing, appetite, urination, movement or responsiveness changes quickly.
What can the longer-term outlook involve?
The outlook depends on the underlying cause, severity, species and how quickly effective care begins.
Can risk be reduced?
- Provide species-appropriate nutrition, housing, sanitation and routine veterinary care.
- Learn the animal's normal behavior, appetite, body condition and waste pattern so meaningful changes are noticed early.
When should you arrange care?
- Contact a veterinarian promptly for voice change, breathing effort, tail bobbing or exercise intolerance. or weight loss, reduced appetite or nonspecific weakness..
- Arrange reassessment if signs return, worsen or do not improve as expected.
Seek emergency veterinary care if you notice:
SEEK EMERGENCY VETERINARY CARE- Open-mouth breathing, collapse, blue tissue or inability to perch.
Sources behind this guide
VeterinaryPartner — client education from the Veterinary Information NetworkPrimary veterinary or veterinary-university guidance ↗Association of Avian Veterinarians: resources for bird ownersPrimary veterinary or veterinary-university guidance ↗Content last reviewed: September 17, 2026. Review status: veterinary-informed; independent veterinarian review not yet completed.