Psittacine beak and feather disease
Psittacine beak and feather disease is a viral disease affecting all Old World and New World parrots. The causative virus—beak and feather disease virus —belongs to the taxonomic genus Circovirus, family Circoviridae. Wikipedia
Family: Circoviridae
Genus: Circovirus
Order: Cirlivirales
Species: Beak and feather disease virus