The density of wild animals in the valley is not high, but all the animals found are rare or endangered. A total 13 species of mammals are recorded for the park by CP Kala and its vicinity although only he sighted 9 species directly: northern plains gray langur Semnopithecus entellus, red giant flying squirrel Petaurista petaurista, Himalayan black bear Ursus thibetanus (VU), red fox Vulpes vulpes, Himalayan weasel Mustela sibirica, and Himalayan yellow-throated marten Martes flavigula, Himalayan goral Naemorhedus goral, Himalayan musk deer Moschus leucogaster, Indian spotted chevrotain Moschiola indica, Himalayan tahr Hemitragus jemlahicus (VU) and serow Capricornis sumatraensis (VU). The tahr is common, the serow, goral, musk deer and bharal, blue sheep are rare. The common leopard Panthera pardus is reported from lower parts of the valley closer to the villages. Local people have also reported evidence of brown bear Ursus arctos and bharal or blue sheep Pseudois nayaur. A recent faunal survey in October 2004 has established the presence of snow leopard Panthera uncia (EN) in the national park. The area is within the West Himalayan Endemic Bird Area but there have been no surveys specific to the Valley. 114 species were seen in 1993 in Nanda Devi Park. Species frequently seen in the valley include lammergeier Gypaetus barbatus, Himalayan vulture Gyps himalayensis, Yellow-billed and Red-billed choughs Pyrrhocorax graculus and P. pyrrhocorax, koklass pheasant Pucrasia macrolopha, the nationally listed Himalayan monal pheasant Lophophorus impejanus, found in rhododendron thickets, scaly-bellied and yellownape woodpeckers Picus squamatus and P. flavinucha, great and blue-throated barbets Megalaima virens and M. asiatica, snow pigeon Columba leuconota and spotted dove Stigmatopelia chinensis. The area is relatively poor in reptiles: most often seen are the high altitude lizard Agama tuberculata, Himalayan ground skink Leiolopisma himalayana and Himalayan pit viper Gloydius himalayanus. Along with the flowers are wild bees and many species of butterfly which need to be more researched. A few of the more evident species are lime butterfly Papilio demoleus demoleus, common yellow swallowtail Papilio machaon, common Mormon Papilio polytes romulus, spangle Papilio protenor protenor and common blue apollo Parnassius hardwickei.