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Population trends in Himalayan Griffon in Upper Mustang, Nepal, before and after the ban on diclofenac


The Upper Mustang region of Nepal holds important breeding populations of Himalayan Griffon Gyps himalayensis. Despite this species being considered ‘Least Concern’ on the IUCN Red List, the population in Upper Mustang had declined substantially in the early to mid-2000s. During that period, the non-steroidal anti-inflammatory drug diclofenac was commonly used to treat illness and injury in domesticated ungulates throughout Nepal. The timing and magnitude of declines in Himalayan Griffon in Upper Mustang resemble the declines in resident populations of the ‘Critically Endangered’ White-rumped Vulture Gyps bengalensis and Slender-billed Vulture Gyps tenuirostris in Nepal, both of which are also known to be highly sensitive to diclofenac. Since 2006, the veterinary use of diclofenac has been banned in Nepal to prevent further vulture declines. In this paper, we analyse the population trend in Himalayan Griffon in Upper Mustang between 2002 and 2014 and show a partial recovery. We conclude that the decline is now occurring at a slower rate than previously observed and immigration from areas where diclofenac was either not or rarely used the probable explanation for the recovery observed.

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M. J Crawley . (2007) The R Book. Chichester, UK: John Wiley and Sons.

R. J. Cuthbert , M. A. Taggart , V. Prakash , M. Saini , D. Swarup , S. Upreti , R. Mateo , S. S. Chakraborty , P. Deori and R. E Green . (2011) Effectiveness of action in India to reduce exposure of Gyps vultures to the toxic veterinary drug diclofenac. PLoS One 6: e19069.

R. J. Cuthbert , M. A. Taggart , V. Prakash , S. S. Chakraborty , P. Deori , T. H. Galligan , M. Kulkarni , S. Ranade , M. Saini , A. K. Sharma , R. Shringarpure and R. E Green . (2014) Avian scavengers and the threat from veterinary pharmaceuticals. Phil. Trans. R. Soc. B 369: 20130574.

D. Das , R. Cuthbert , R. D. Jakati and V Prakash . (2010) Diclofenac is toxic to the Himalayan Griffon Vulture Gyps himalayensis. Bird Conserv. Internatn. 21: 7275.

T. L. De Vault , O. E. Rhodes and J. A Shivik ., (2003) Scavenging by vertebrates: behavioral, ecological, and evolutionary perspectives on an important energy transfer pathway in terrestrial ecosystems. Oikos 102: 225234.

R. M. Fewster , S. T. Buckland , G. M. Siriwardena , S. R. Baillie and J. D Wilson . (2000) Analysis of population trends for farmland birds using generalized additive models. Ecology 81: 19701984.

R. E. Green , M. A. Taggart , D. Das , D. J. Pain , C. S. Kumar , A. A. Cunningham and R Cuthbert . (2006) Collapse of Asian vulture populations: risk of mortality from residue of the veterinary drug diclofenac in carcasses of treated cattle. J. Appl. Ecol. 43: 949956.

R. E. Green , M. A. Taggart , K. R. Senacha , B. Raghavan , D. J. Pain , Y. Jhala and R Cuthbert . (2007) Rate of decline of the Oriental white-backed vulture population in India estimated from a survey of diclofenac residues in carcasses of ungulates. PLoS ONE 2: E686.

A. Markandya , T. Taylor , A. Longo , M. N. Murty , S. Murty and K Dhavala . (2008) Counting the cost of vulture decline – an appraisal of the human health and other benefits of vultures in India. Ecol. Econ. 67: 194204.

M. Moleón , J. A. Sánchez-Zapata , A. Margalida , M. Carrete , N. Owen-Smith and J. A Donázar . (2014) Humans and scavengers: the evolution of interactions and ecosystem services. Bioscience 64: 394403.

C. Niel and J. D Lebreton . (2005) Using demographic invariants to detect overharvested bird populations from incomplete data. Conserv. Biol. 19: 826835.

J. L. Oaks , M. Gilbert , M. Z. Virani , R. T. Watson , C. U. Meteyer , B. A. Rideout , H. L. Shivaprasad , S. Ahmed , M. J. Chaudhary , M. Arshad , S. Mahmood , A. Ali and A. A Khan . (2004) Diclofenac residues as the cause of vulture population decline in Pakistan. Nature 427: 630633.

V. Prakash , D. J. Pain , A. A. Cunningham , P. F. Donald , N. Prakash , A. Verma , R. Gargi , S. Sivakumar and A. R Rahmani . (2003) Catastrophic collapse of Indian white-backed Gyps bengalensis and long-billed Gyps indicus vulture populations. Biol. Conserv. 109: 381390.

V. Prakash , M. C. Bishwakarma , A. Chaudhary , R. Cuthbert , R. Dave , M. Kulkarni , S. Kumar , K. Paudel , S. Ranade , R. Shringarpure and R. E Green . (2012) The population decline of Gyps vultures in India and Nepal has slowed since veterinary use of diclofenac was banned. PLoS ONE 7: e49118.

B. Ripley , B. Venables , K. Hornik , A. Gebhardt and D Firth . (2013) MASS: support functions and datasets for Venables and Ripley's MASS (Available at:

G. E. Swan , R. Cuthbert , M. Quevedo , R. E. Green , D. J. Pain , P. Bartels , A. A. Cunningham , N. Duncan , A. A. Meharg , L. Oaks , J. M. Jones , S. Shultz , M. A. Taggart , G. Verdoorn and K Wolter . (2006) Toxicity of diclofenac to Gyps vultures. Biol. Lett. 2: 279282.

M. A. Taggart , K. R. Senacha , R. E. Green , R. Cuthbert , Y. V. Jhala , A. R. Rahmani , A. A. Meharg and D. J Pain . (2009) Analysis of nine NSAIDs in ungulate tissues available to Critically Endangered vultures in India. Environ. Sci. Technol. 43: 45614566.

M. A. Taggart , K. R. Senacha , R. E. Green , Y. V. Jhala , B. Raghavan , A. R. Rahmani , R. Cuthbert , D. J. Pain and A. A Meharg . (2007) Diclofenac residues in carcasses of domestic ungulates available to vultures in India. Environ. Int. 33: 759765.

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Bird Conservation International
  • ISSN: 0959-2709
  • EISSN: 1474-0001
  • URL: /core/journals/bird-conservation-international
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