The widespread use of the NSAID Diclofenac in veterinary medicine in India has caused its population to collapse in recent years, however. Diclofenac is a compound now known to be extremely poisonous to vultures. The population of this species has essentially halved every other year since the late 1990s, and what once was a plentiful species numbering in the hundreds of thousands has come dangerously close to extinction in less than two decades. Consequently it was uplisted to Critically Endangered in the 2007 IUCN Red List. Several NSAIDs have been found to be harmful to scavenging birds. Diclofenac, carprofen, flunixin, ibuprofen and phenylbutazone were associated with mortality. Meloxicam has thus far been found to be “Vulture-Safe” and its use in veterinary treatment of livestock is being encouraged.
The Crested Pigeon (Ocyphaps lophotes, also commonly known as the Top Notch Pigeon) is a bird found widely throughout mainland Australia except for the far northern tropical areas. It is the only member of the genus Ocyphaps.