Udyl' lake

IBA Criteria

Year of most recent IBA criteria assessment: 2004

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Swan Goose Anser cygnoid VU breeding 1978-1981 40-150 breeding pairs A1, A4i
Lesser White-fronted Goose Anser erythropus VU passage 1979 14 individuals A1, A4i
Common Goldeneye Bucephala clangula LC breeding 2004 present A3, A4i
Scaly-sided Merganser Mergus squamatus EN breeding 2004 present A1, A3
Common Pochard Aythya ferina VU unknown 2004 present A4i
Baikal Teal Sibirionetta formosa LC breeding 2004 present A1
Hooded Crane Grus monacha VU breeding 1979-1980 1 breeding pairs A1, A3
Schrenck's Bittern Ixobrychus eurhythmus LC breeding 2004 present A3, A4i
Blakiston's Eagle-owl Bubo blakistoni EN resident 2004 present A1, A3
Steller's Sea-eagle Haliaeetus pelagicus VU resident 1978-1989 7-8 breeding pairs A1, A3

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Udyl' Zakaznik (Federal) 100,400 protected area contained by site 0
Ostrov Krachiy Nature Monument 5 protected area overlaps with site 0
Lake Udyl & the mouths of the Bichi, Bitki & Pilda Rivers Ramsar Site, Wetland of International Importance 57,600 protected area contained by site 0


IUCN Habitat Habitat detail Extent (% of site)
Wetlands (inland) Freshwater lakes and pools, Riverine floodplains -
Forest Coniferous forest (temperate/boreal) -
Shrubland -
For further information about the habitat classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Udyl' lake. Downloaded from on 05/02/2023.