Top Diseases That Affect Canaries and Finches: What Every Bird Owner Should Know
- Affordable Avian
- Jul 16
- 2 min read
Top Diseases That Affect Canaries and Finches: What Every Bird Owner Should Know
Canaries and finches are among the most beloved small companion birds, known for their vibrant colors, beautiful songs, and delicate nature. But with their small size comes a heightened sensitivity to disease. Whether you're a breeder, a bird enthusiast, or a first-time owner, understanding the common illnesses that affect these birds is essential for ensuring their health and well-being.
🦠 Viral Diseases
Canarypox: Transmitted by mosquitoes, this virus causes wart-like lesions on unfeathered skin, difficulty breathing, and conjunctivitis. In severe cases, it can be fatal.
Avian Polyomavirus (APV): While more common in parrots, finches and canaries can occasionally be affected, especially young or immunocompromised birds. Symptoms include weight loss, stunted growth, and sudden death.
Avian Bornavirus (PDD): Though rare, this virus can cause neurological and digestive issues in finches. Symptoms include tremors, weight loss, and undigested seed in droppings.
Circovirus: An immunosuppressive virus that can leave birds vulnerable to secondary infections. Symptoms are often nonspecific but may include lethargy and feather issues.
Adenovirus: May cause sudden death in young birds and liver issues in adults.
🦠 Bacterial Diseases
Salmonellosis: Highly contagious and zoonotic, this infection causes diarrhea, joint swelling, nervous system signs, and death. Birds may carry it without symptoms.
Chlamydiosis (Psittacosis): A bacterial infection that affects respiration and digestion. It is also a zoonotic disease, meaning it can infect humans.
Mycobacteriosis: Chronic wasting disease caused by Mycobacterium avium complex. Leads to diarrhea, weight loss, and organ enlargement. Zoonotic risk, especially for immunocompromised individuals.
E. coli and Staphylococcus spp.: Opportunistic bacteria that may cause septicemia or localized infections like abscesses, especially in stressed birds.
🧹 Parasitic & Protozoal Diseases
Air Sac Mites (Sternostoma tracheacolum): Common in canaries, these mites infest the respiratory system, causing wheezing, tail bobbing, and open-mouth breathing.
Coccidiosis: Caused by Isospora spp., this intestinal parasite leads to diarrhea, dehydration, and weight loss, especially in young birds.
Giardiasis: Caused by Giardia spp., leading to chronic diarrhea and weight loss.
Cryptosporidiosis: Zoonotic protozoa that affect digestion, causing watery droppings and dehydration.
Feather Mites and Lice: External parasites that irritate the skin, damage feathers, and can lead to secondary infections.
🚨 When to Test Your Birds
Early detection is critical for these small species, as they can deteriorate quickly once symptoms appear. We recommend testing when:
Introducing new birds to an aviary
Breeding pairs are being established
Birds show signs of weight loss, respiratory distress, or feather issues
There has been recent exposure to wild birds or shared aviary housing
🔧 How We Can Help
At Affordable Avian, we offer testing panels specifically designed for canaries, finches, and other small passerines. From Salmonella and APV to Chlamydia psittaci and Cryptosporidium, we can help you catch problems before they spread.
Protect your flock with proactive diagnostics. Visit us online to learn more or schedule your test today.

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