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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
Bean Goose Anser fabalis	LC	passage	1997	3,000-5,000 individuals	A4i
Greater White-fronted Goose Anser albifrons	LC	passage	2004	present	A4i
Greater Scaup Aythya marila	LC	breeding	1997	frequent	A3
Pacific Golden Plover Pluvialis fulva	LC	breeding	1997	frequent	A3
Dunlin Calidris alpina	NT	breeding	1997	common	A3
Red-necked Phalarope Phalaropus lobatus	LC	breeding	1997	common	A3
Slaty-backed Gull Larus schistisagus	LC	breeding	1997	common	A4i
Arctic Tern Sterna paradisaea	LC	breeding	1997	frequent	A3
Long-tailed Jaeger Stercorarius longicaudus	LC	breeding	1997	frequent	A3
Arctic Jaeger Stercorarius parasiticus	LC	breeding	1997	frequent	A3
Pechora Pipit Anthus gustavi	LC	breeding	1997	common	A3
Red-throated Pipit Anthus cervinus	LC	breeding	1997	frequent	A3
Lapland Longspur Calcarius lapponicus	LC	breeding	1997	common	A3
A4iii Species group - waterbirds	n/a	passage	1997	min 55,000 individuals	A4iii

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
1983	Utholok	Zakaznik	100
1994	Utkholok	Ramsar Site, Wetland of International Importance	100

Habitat1	Habitat detail	% of IBA
Grassland	Tundra	major (>10)
Wetlands (inland)	Freshwater lakes and pools, Raised and blanket bogs, Rivers and streams	major (>10)
Marine Coastal/Supratidal		minor (<10)
Marine Intertidal		minor (<10)

1. IUCN Habitat classification.

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