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Dvuob'ye
Location Russia (Central Asian), Khanty-Mantymansiyski region,Tyumen region,Yamalo-Nenetsky region
Central coordinates 65o 9.00' East  65o 12.00' North
IBA criteria A1, A3, A4i, A4iii
Area 680,000 ha
Altitude 5 - 23m
Year of IBA assessment 2006





Ornithological information Important area for Emberiza aureola, Branta ruficollis, Anser erythropus and A3-criteria species.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bean Goose Anser fabalis passage  1989-2001  5,000-10,000 individuals  medium  A4i  Least Concern 
Greater White-fronted Goose Anser albifrons passage  1989-2001  10,000-30,000 individuals  medium  A4i  Least Concern 
Lesser White-fronted Goose Anser erythropus passage  2000  400-600 individuals  medium  A1, A4i  Vulnerable 
Red-breasted Goose Branta ruficollis passage  1999  3,000-7,000 individuals  poor  A1, A4i  Endangered 
Whooper Swan Cygnus cygnus breeding  2001  100-150 breeding pairs  good  A3  Least Concern 
Whooper Swan Cygnus cygnus passage  2001  800-2,000 individuals  medium  A4i  Least Concern 
Tundra Swan Cygnus columbianus passage  2001  300-650 individuals  good  A4i  Least Concern 
Eurasian Wigeon Anas penelope breeding  2001  8,500-13,000 breeding pairs  good  A3, A4i  Least Concern 
Eurasian Wigeon Anas penelope passage  2001  40,000-65,000 individuals  medium  A4i  Least Concern 
Northern Shoveler Anas clypeata breeding  2001  2,500-3,500 breeding pairs  good  A4i  Least Concern 
Northern Shoveler Anas clypeata passage  2001  10,000-15,000 individuals  medium  A4i  Least Concern 
Northern Pintail Anas acuta breeding  2001  13,000-20,000 breeding pairs  good  A4i  Least Concern 
Northern Pintail Anas acuta passage  2001  100,000-150,000 individuals  medium  A4i  Least Concern 
Garganey Anas querquedula breeding  2001  2,000-4,000 breeding pairs  good  A4i  Least Concern 
Garganey Anas querquedula passage  2001  6,000-12,000 individuals  medium  A4i  Least Concern 
Common Teal Anas crecca breeding  2001  3,000-4,500 breeding pairs  good  A4i  Least Concern 
Common Teal Anas crecca passage  2001  9,000-15,000 individuals  medium  A4i  Least Concern 
Common Pochard Aythya ferina breeding  2001  2,000-3,500 breeding pairs  medium  A4i  Least Concern 
Common Pochard Aythya ferina passage  2001  10,000-20,000 individuals  medium  A4i  Least Concern 
Tufted Duck Aythya fuligula breeding  2001  3,500-5,500 breeding pairs  good  A4i  Least Concern 
Tufted Duck Aythya fuligula passage  2001  45,000-70,000 individuals  medium  A4i  Least Concern 
Greater Scaup Aythya marila passage  2001  35,000-60,000 individuals  poor  A4i  Least Concern 
Black Scoter Melanitta nigra passage  2001  70,000-150,000 individuals  medium  A4i  Not Recognised 
Common Goldeneye Bucephala clangula breeding  2000  400-500 breeding pairs  poor  A3, A4i  Least Concern 
Common Goldeneye Bucephala clangula passage  2000  2,000-3,000 individuals  poor  A4i  Least Concern 
Smew Mergellus albellus breeding  2001  350-700 breeding pairs  poor  A3, A4i  Least Concern 
Smew Mergellus albellus non-breeding  1989-2001  2,600-25,000 individuals  poor  A4i  Least Concern 
Red-breasted Merganser Mergus serrator breeding  1966-2001  130-290 breeding pairs  unknown  A4i  Least Concern 
Horned Grebe Podiceps auritus breeding  2001  1,000-3,000 breeding pairs  poor  A3, A4i  Least Concern 
Pintail Snipe Gallinago stenura breeding  1989-2001  300-600 breeding pairs  poor  A4i  Least Concern 
Common Snipe Gallinago gallinago breeding  2001  9,000-15,000 breeding pairs  medium  A4i  Least Concern 
Eurasian Curlew Numenius arquata breeding  2000  350-600 breeding pairs  medium  A4i  Near Threatened 
Common Greenshank Tringa nebularia breeding  2001  350-500 breeding pairs  poor  A3  Least Concern 
Terek Sandpiper Xenus cinereus breeding  2001  1,000-2,000 breeding pairs  poor  A4i  Least Concern 
Little Stint Calidris minuta passage  2001  40,000-60,000 individuals  poor  A4i  Least Concern 
Temminck's Stint Calidris temminckii passage  2001  120,000-200,000 individuals  poor  A4i  Least Concern 
Dunlin Calidris alpina passage  2001  20,000-40,000 individuals  poor  A4i  Least Concern 
Ruff Philomachus pugnax passage  2001  10,000-15,000 individuals  poor  A4i  Least Concern 
Red-necked Phalarope Phalaropus lobatus breeding  2001  7,000-8,000 breeding pairs  poor  A4i  Least Concern 
Black-headed Gull Larus ridibundus breeding  1989-2001  15,000-20,000 individuals  medium  A4i  Least Concern 
Little Gull Larus minutus breeding  2001  65,000-80,000 breeding pairs  medium  A4i  Least Concern 
Common Tern Sterna hirundo winter  1989-2001  15,000-20,000 individuals  medium  A4i  Least Concern 
Eurasian Three-toed Woodpecker Picoides tridactylus breeding  1989-2001  present [units unknown]  -  A3  Least Concern 
Siberian Tit Parus cinctus breeding  1989-2001  present [units unknown]  -  A3  Least Concern 
Arctic Warbler Phylloscopus borealis breeding  1989-2001  present [units unknown]  -  A3  Least Concern 
Brambling Fringilla montifringilla breeding  1989-2001  present [units unknown]  -  A3  Least Concern 
Pine Grosbeak Pinicola enucleator breeding  1989-2001  present [units unknown]  -  A3  Least Concern 
Rustic Bunting Emberiza rustica breeding  1989-2001  present [units unknown]  -  A3  Least Concern 
Yellow-breasted Bunting Emberiza aureola breeding  1963-2000  700-1,000 breeding pairs  poor  A1  Vulnerable 
A4iii Species group - waterbirds -  -  present [units unknown]  -  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Kunovatski International Park 0 protected area contains site 0  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Mixed woodland  6%
Shrubland   13%
Grassland Humid grasslands  60%
Wetlands (inland) Mud flats and sand flats; Rivers and streams; Standing freshwater  21%
Artificial landscapes (terrestrial)   minor

Land use

Land-use Extent (% of site)
rangeland/pastureland 2%
forestry 6%
fisheries/aquaculture 100%
hunting 92%
urban/industrial/transport minor
not utilised 20%
nature conservation and research 8%
other 4%
Notes: mowing

Acknowledgements The identification of IBAs and information collected between 1980 and 2009 provided by the IBA network of the Russian Bird Conservation Union (RBCU).

References Golovatin M.G.

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Recommended citation  BirdLife International (2013) Important Bird Areas factsheet: Dvuob'ye. Downloaded from http://www.birdlife.org on 25/05/2013

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