email a friend
printable version
Location Uzbekistan, Tashkent
Central coordinates 70o 46.55' East  42o 9.35' North
IBA criteria A1, A3
Area 7,330 ha
Altitude 1,900 - 3,100m
Year of IBA assessment 2007

Uzbekistan Society for the Protection of Birds (Affiliate)

Site description The IBA covers part of the basin of the Pskem river (the middle section of the Oygaing river and adjoining southern mountainside of the Maydantal range in the Western Tyan-Shan), in the Bostanlyk district of Tashkent region. The borders of the IBA are well defined. The site covers all of the southern mountainside of the Mayantal range from the Oygaing river to the ridge of the range, from the mouth of the Tyuzashu river valley to the mouth of the eastern Ayutor river and includes the slopes of these river valleys. The altitude ranges from 1,900-3,050 m above sea level.

Key Biodiversity The distribution of some birds in the Western Tyan-Shan is very interesting and Eremophila alpestris and Carpodacus grandis are completely absent. The avifauna includes 213 species, including Ciconia nigra, Aegypius monachus, Gypaetus barbatus and Aquila chrysaetos which are included in the national Red Data Book. M.N.Korelov (1956) recorded Columba eversmanni here. The Pskem valley runs from south-west to north-east and in spring serves as a major migration route, especially for large species which take the shortest route and avoid the strong anthropogenic influence in the foothills. Grus virgo, Ciconia nigra and raptors are common. The IBA is situated in the widest, middle part of the valley, has a lot of water and provides safe roosting away from settlements. Aegypius monachus, Gyps fulvus, Gyps hymalayensis and a large complex of mountain species occur on the surrounding slopes.

Non-bird biodiversity: Mammals include 38 species, the most intersting are increasing populations of Uncia uncia and Cervus elaphus songaricus. Sus scrofa, Canis lupus, Ursus arctos isabellinus and Lynx lynx are common. Marmota caudata and Ochotona rutila are numerous and Capra sibirica occurs.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Himalayan Snowcock Tetraogallus himalayensis resident  2002  1-3 individuals  good  A3  Least Concern 
Lesser Kestrel Falco naumanni passage  2002-2007  10-250 individuals  poor  A1  Least Concern 
Himalayan Griffon Gyps himalayensis resident  2002-2007  4-40 individuals  good  A3  Near Threatened 
Cinereous Vulture Aegypius monachus resident  2002-2007  12-38 individuals  good  A1  Near Threatened 
Yellow-billed Chough Pyrrhocorax graculus breeding  2002-2007  70-480 individuals  good  A3  Least Concern 
Hume's Lark Calandrella acutirostris breeding  2002-2007  3-23 individuals  good  A3  Least Concern 
Sulphur-bellied Warbler Phylloscopus griseolus breeding  2002-2007  5-10 individuals  good  A3  Least Concern 
Wallcreeper Tichodroma muraria resident  2002  1-2 individuals  good  A3  Least Concern 
White-tailed Rubythroat Luscinia pectoralis breeding  2002-2007  1-3 individuals  good  A3  Least Concern 
White-winged Snowfinch Montifringilla nivalis breeding  2002-2007  10-250 individuals  good  A3  Least Concern 
Alpine Accentor Prunella collaris breeding  2002-2007  1-10 individuals  good  A3  Least Concern 
Brown Accentor Prunella fulvescens breeding  2002-2007  1-15 individuals  good  A3  Least Concern 
Fire-fronted Serin Serinus pusillus breeding  2002-2007  2-40 individuals  good  A3  Least Concern 

IBA Monitoring

2007 high not assessed low
Medium - based upon reliable but incomplete / partially representative data

Agriculture and aquaculture livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming past (and unlikely to return) and no longer limiting some of area/population (10-49%) moderate to rapid deterioration low
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now small area/few individuals (<10%) slow but significant deterioration low
Human intrusions and disturbance recreational activities happening now small area/few individuals (<10%) slow but significant deterioration low
Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - named species happening now majority/most of area/population (50-90%) moderate to rapid deterioration high

Whole area of site (>90%) covered by appropriate conservation designation  No management planning has taken place  Very little or no conservation action taking place  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Ugam-Chatkal National Park 1,149,200 protected area contains site 7,330  


IUCN habitat Habitat detail Extent (% of site)
Shrubland Scrub  20%
Forest Mixed; Treeline ecotone  40%
Wetlands (inland) Rivers & streams  20%
Rocky areas Inland cliffs  20%

Land use

Land-use Extent (% of site)
nature conservation and research 100%

Protection status Ugam-Chatkal National Park contains the IBA.

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Oygaing River Valley. Downloaded from on 26/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife