Systemic Conditions in Birds

Systemic Conditions in Birds

Some bird diseases affect the whole bird rather than one organ system — including viral illnesses such as PDD (avian bornavirus) and polyomavirus. These pages are decision guides for owners: what to do next, when to call a vet, and which older educational guides to read. They are not diagnoses.

Vet-first. Systemic viral diseases are clinic-level. Pet Megamart does not sell cures or the injectable polyoma vaccine. Supportive care education only — both decision pages below are product-free.

Decision guides

PDD (Proventricular Dilatation Disease)

Undigested food, weight loss, or neurologic changes linked to avian bornavirus — product-free decision page. Soft-links older PDD digestive guide.

Does this sound like your bird?

Polyomavirus

Especially concerning in young birds / nurseries — product-free (no injectable vaccine in catalog). Ends at vet-first guidance.

Does this sound like your bird?

Related soft guides