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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Whooper Swan Cygnus cygnus	LC	passage	1998	present	A4i
Bean Goose Anser fabalis	LC	passage	1998	present	A4i
Greater White-fronted Goose Anser albifrons	LC	passage	1998	present	A4i
Lesser White-fronted Goose Anser erythropus	VU	passage	1998	present	A1, A4i
Common Goldeneye Bucephala clangula	LC	passage	1998	present	A4i
Goosander Mergus merganser	LC	passage	1998	present	A4i
Mandarin Duck Aix galericulata	LC	breeding	1998	present	A3
Baer's Pochard Aythya baeri	CR	breeding	1998	present	A1, A3
Tufted Duck Aythya fuligula	LC	passage	1998	present	A4i
Greater Scaup Aythya marila	LC	passage	1998	present	A4i
Garganey Spatula querquedula	LC	passage	1998	present	A4i
Northern Shoveler Spatula clypeata	LC	passage	1998	present	A4i
Baikal Teal Sibirionetta formosa	LC	passage	1998	present	A1, A4i
Falcated Duck Mareca falcata	LC	passage	1998	present	A4i
Eurasian Wigeon Mareca penelope	LC	passage	1998	present	A4i
Mallard Anas platyrhynchos	LC	passage	1998	present	A4i
Northern Pintail Anas acuta	LC	passage	1998	present	A4i
Common Teal Anas crecca	LC	breeding	2004	present	A4i
Red-crowned Crane Grus japonensis	VU	breeding	1998	present	A1, A3
Hooded Crane Grus monacha	VU	breeding	1998	present	A1, A3
Oriental Stork Ciconia boyciana	EN	breeding	1998	present	A1, A3
Schrenck's Bittern Ixobrychus eurhythmus	LC	passage	1998	present	A4i
Far Eastern Curlew Numenius madagascariensis	EN	breeding	1998	present	A3
Green Sandpiper Tringa ochropus	LC	breeding	1998	present	A3
Eurasian Pygmy-owl Glaucidium passerinum	LC	breeding	1998	present	A3
Ashy Minivet Pericrocotus divaricatus	LC	breeding	1998	present	A3
Lanceolated Warbler Locustella lanceolata	LC	breeding	1998	present	A3
Locustella fasciolata	NR	breeding	1998	present	A3
Locustella fasciolata	NR	breeding	1998	present	A3
Pale-legged Leaf-warbler Phylloscopus tenellipes	LC	breeding	1998	present	A3
Arctic Warbler Phylloscopus borealis	LC	breeding	1998	present	A3
Chestnut-flanked White-eye Zosterops erythropleurus	LC	breeding	1998	present	A3
Grey-backed Thrush Turdus hortulorum	LC	breeding	1998	present	A3
Pale Thrush Turdus pallidus	LC	breeding	1998	present	A3
Siberian Blue Robin Larvivora cyane	LC	breeding	1998	present	A3
Rufous-tailed Robin Larvivora sibilans	LC	breeding	1998	present	A3
Yellow-rumped Flycatcher Ficedula zanthopygia	LC	breeding	1998	present	A3
Mugimaki Flycatcher Ficedula mugimaki	LC	breeding	1998	present	A3
White-throated Rock-thrush Monticola gularis	LC	breeding	1998	present	A3
Bohemian Waxwing Bombycilla garrulus	LC	breeding	1998	present	A3
Forest Wagtail Dendronanthus indicus	LC	breeding	1998	present	A3
Chinese Grosbeak Eophona migratoria	LC	breeding	1998	present	A3
Japanese Grosbeak Eophona personata	LC	breeding	1998	present	A3
Yellow-breasted Bunting Emberiza aureola	CR	breeding	1998	present	A3
Chestnut Bunting Emberiza rutila	LC	breeding	1998	present	A3
Tristram's Bunting Emberiza tristrami	LC	breeding	1998	present	A3

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2004) may differ.

Year	Protected Area	Designation	% overlap with IBA
1994	Lake Bolon & the mouths of the Selgon & Simmi Rivers	Ramsar Site, Wetland of International Importance	32
1997	Bolon'sky	Zapovednik	17

Habitat1	Habitat detail	% of IBA
Forest	Coniferous forest (temperate/boreal), Broadleaf deciduous forest (temperate/boreal)	-
Grassland	Edaphic grassland	-
Wetlands (inland)	Riverine floodplains, Freshwater lakes and pools	-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Bolon' lake (Russia (Asian)). Downloaded from https://datazone.birdlife.org/site/factsheet/bolon-lake-iba-russia-(asian) on 22/11/2024.