Parrot Bornavirus-4 (PaBV-4)

In July 2026, scientists reported the first identification and genetic characterisation of Parrot Bornavirus-4 (PaBV-4) in captive psittacine birds in India, raising concerns over the health of exotic pet birds and conservation of threatened parrot species.

  • The virus causes Proventricular Dilatation Disease (PDD), a largely fatal disease affecting the digestive and nervous systems of parrots and related birds.
  • Psittacine birds belong to the order Psittaciformes and include parrots, parakeets, macaws, cockatoos, cockatiels, budgerigars, and lovebirds.
  • They are known for their strong curved beaks, intelligence, and vocal ....
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