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"SURVEY OF HIMALAYAN GRIFFON Gyps himalayensis IN UPPER MUSTANG, NEPAL" |
Raju Acharya (Sharma)
Coordinator, Biodiversity and Climate Change,
Friends of Nature (FON) |
| This study covers an area of about 400 sq. km. of Upper Mustang and was carried out between 15 th July 2004 and 6 th August 2004.The study was carried out as a result of the lack of information on Himalayan Griffon status in the trans-Himalayan region of Upper Mustang and the drastically reduced numbers of some lowland vulture species. Another rationale for the study was the comparison of the present findings with previous survey results. The objective of the study was to find out the relative densities and nesting sites of the species and to determine the conservation measures that are needed within the study area.
The major routes followed were the same as those of last year’s survey to ensure that the results are comparable. Birds within 500 m on either side of each transect were counted. The traditional place, where the people carry out their funeral activities was chosen for baiting. Local experiences, observations and a previous study were considered to identify nesting sites. In 20 days out of 22 days Himalayan Griffons were observed from 8.00 AM to 5.30 PM in four main transects. The transects were from Jomsom - Nichung, Lomanthang - Samjung -Lomanthang, Lomanthang -Yara -Lomanthang amd and Lomanthang to Jomsom
Altogether 235 Himalayan Griffons were recorded within the study period. The total number of observations of the Himalayan Griffon has decreased by 30% within just two years in the study area. A total of 62 nests of Himalayan Griffons were recorded in caves. The number of Himalayan Griffons nesting in the Chhosyar area of Upper Mustang had decreased by 75% and the vulture had disappeared from Ghemi and from Yara cave. On the basis of nests located, altogether 58 individual of Himalayan Griffons were found in the study area. The average detection (encounter) rate of the species found per square kilometer was 0.138. Baiting was used to count Himalayan Griffons in the area. A total of 62 Himalayan Griffons immediately approached the baiting sites. Regular monitoring, testing of diclofenac in Himalayan Griffon, conservation awareness, and increasing the vulture’s prey species are recommended to ensure the conservation of Himalayan Griffon in the Upper Mustang.
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