Data Zone
The site was identified as internationally important for bird conservation in 2004 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Black-billed Capercaillie Tetrao urogalloides | LC | resident (1999) | present | A3 |
| Whooper Swan Cygnus cygnus | LC | breeding (1976–1982) | 1,599–2,650 birds | A3 |
| Tundra Swan Cygnus columbianus | LC | passage (1999) | present | A4i |
| Brent Goose Branta bernicla | LC | passage (1975) | 661 birds | A4i |
| Bean Goose Anser fabalis | LC | passage (1976–1982) | 1,500–9,800 birds | A4i |
| Greater White-fronted Goose Anser albifrons | LC | passage (1975–1982) | 2,200–6,100 birds | A4i |
| Lesser White-fronted Goose Anser erythropus | VU | passage (1999) | uncommon | A1, A4i |
| Siberian Scoter Melanitta stejnegeri | LC | passage (1976) | 5,500 birds | A4i |
| Common Goldeneye Bucephala clangula | LC | breeding (1976–1982) | 100–140 birds | A3, A4i |
| Smew Mergellus albellus | LC | breeding (1976–1982) | 150–350 birds | A3, A4i |
| Red-breasted Merganser Mergus serrator | LC | breeding (1999) | present | A4i |
| Tufted Duck Aythya fuligula | LC | breeding (1976–1982) | common | A4i |
| Northern Shoveler Spatula clypeata | LC | breeding (1976–1982) | 700–1,700 birds | A4i |
| Baikal Teal Sibirionetta formosa | LC | breeding (1976–1982) | 110–960 birds | A1, A4i |
| Falcated Duck Mareca falcata | LC | breeding (1975–1982) | 150–250 birds | A3, A4i |
| Eurasian Wigeon Mareca penelope | LC | breeding (1976–1982) | 2,900–6,600 birds | A3, A4i |
| Northern Pintail Anas acuta | LC | breeding (1976–1982) | 5,500–11,000 birds | A4i |
| Common Teal Anas crecca | LC | breeding (2004) | present | A4i |
| Common Crane Grus grus | LC | breeding (1999) | present | A3, A4i |
| Red-throated Loon Gavia stellata | LC | breeding (1999) | present | A4i |
| Arctic Loon Gavia arctica | LC | breeding (1999) | present | A4i |
| Far Eastern Curlew Numenius madagascariensis | EN | breeding (1982) | 300 pairs | A3 |
| Pin-tailed Snipe Gallinago stenura | LC | breeding (1999) | present | A3 |
| Terek Sandpiper Xenus cinereus | LC | breeding (1999) | present | A3 |
| Common Sandpiper Actitis hypoleucos | LC | breeding (1999) | present | A4i |
| Green Sandpiper Tringa ochropus | LC | breeding (1999) | present | A3, A4i |
| Common Greenshank Tringa nebularia | LC | breeding (1999) | present | A3, A4i |
| Wood Sandpiper Tringa glareola | LC | breeding (1999) | present | A4i |
| Northern Hawk-owl Surnia ulula | LC | resident (1999) | present | A3 |
| Great Grey Owl Strix nebulosa | LC | resident (1999) | present | A3 |
| Siberian Jay Perisoreus infaustus | LC | resident (1999) | present | A3 |
| Siberian Tit Poecile cinctus | LC | resident (1999) | present | A3 |
| Lanceolated Warbler Locustella lanceolata | LC | breeding (1999) | present | A3 |
| Arctic Warbler Phylloscopus borealis | LC | breeding (1999) | present | A3 |
| Siberian Thrush Geokichla sibirica | LC | breeding (1999) | present | A3 |
| Eyebrowed Thrush Turdus obscurus | LC | breeding (1999) | present | A3 |
| Turdus naumanni | NR | breeding (1999) | present | A3 |
| Bohemian Waxwing Bombycilla garrulus | LC | breeding (1999) | present | A3 |
| Siberian Accentor Prunella montanella | LC | breeding (1999) | present | A3 |
| Brambling Fringilla montifringilla | LC | breeding (1999) | present | A3 |
| Pallas's Rosefinch Carpodacus roseus | LC | breeding (1999) | present | A3 |
| Pine Grosbeak Pinicola enucleator | LC | breeding (1999) | present | A3 |
| Two-barred Crossbill Loxia leucoptera | LC | resident (1999) | present | A3 |
| Pallas's Bunting Emberiza pallasi | LC | breeding (1999) | present | A3 |
| Yellow-breasted Bunting Emberiza aureola | CR | breeding (1999) | present | A3 |
| Rustic Bunting Emberiza rustica | VU | breeding (1999) | present | A3 |
| Little Bunting Emberiza pusilla | LC | breeding (1999) | present | A3 |
| Yellow-browed Bunting Emberiza chrysophrys | LC | breeding (1999) | present | A3 |
| A4iii Species group - waterbirds | n/a | breeding (1975–1982) | 11,000–22,000 birds | A4iii |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1986 | Ust'-Viljujskiy | Zakaznik (IV) | 75 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Forest | - | Coniferous forest (temperate/boreal) |
| Grassland | - | Edaphic grassland |
| Shrubland | - | |
| Wetlands (inland) | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Forty Islands (Russia (Asian)). Downloaded from
https://datazone.birdlife.org/site/factsheet/forty-islands-iba-russia-(asian) on 22/12/2024.