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close| 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 |
Ornithological information 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.
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.
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 Vulture Gyps himalayensis | resident | 2002-2007 | 4-40 individuals | good | A3 | Least Concern |
| 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 |
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 |
|
Habitats
| 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% |
Other 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.
Management considerations Threats: poaching of large ungulates and snow leopard by local people.
Protection status Ugam-Chatkal National Park contains the IBA.
Conservation response The World Bank GEF “Transboundary project on biodiversity conservation of Western Tyan-Shan” (2000-2006). According to the results of surveys of 2002 the border of the Pskem zapovednik was defined and included in the bioregional management plan of the Western Tyan-Shan but the zapovednik has not yet been established.
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Oygaing River Valley. Downloaded from http://www.birdlife.org on 22/05/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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