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The site was identified as important in 2019 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Red-breasted Goose Branta ruficollis	VU	winter	2013-2019	5-20 individuals	C6
Greylag Goose Anser anser	LC	winter	2013-2019	10,000-30,000 individuals	A4, B3a, C3, C4
Greater White-fronted Goose Anser albifrons	LC	winter	2013-2019	15,000-35,000 individuals	A4, B3a, C3, C4
Common Goldeneye Bucephala clangula	LC	winter	2013-2019	1,000-2,500 individuals	B3a, C3
Smew Mergellus albellus	LC	winter	2013-2019	1,000-2,100 individuals	A4, B3a, C2, C6
Common Pochard Aythya ferina	VU	winter	2013-2019	1,000-3,500 individuals	A1, B1b
Ferruginous Duck Aythya nyroca	NT	passage	2010-2019	200-1,200 individuals	B1a, B3a, C2
Red-throated Loon Gavia stellata	LC	winter	2019	4-8 individuals	C6
Arctic Loon Gavia arctica	LC	winter	2019	4-17 individuals	C6
Glossy Ibis Plegadis falcinellus	LC	breeding	2008-2013	3-20 breeding pairs	C6
Squacco Heron Ardeola ralloides	LC	breeding	2012-2013	50-200 breeding pairs	B1b, B3a, C2, C6
Little Egret Egretta garzetta	LC	breeding	2011-2013	50-250 breeding pairs	B3a, C2, C6
Pygmy Cormorant Microcarbo pygmaeus	LC	passage	2019	400-1,600 individuals	A4, B3a, C2
Pygmy Cormorant Microcarbo pygmaeus	LC	resident	2013	200-650 breeding pairs	A4, B2a, B3a, C2, C6
Greater Spotted Eagle Clanga clanga	VU	winter	2013-2019	2-5 individuals	C6
Collared Sand Martin Riparia riparia	LC	breeding	2019	2,000-4,000 breeding pairs	B1b
A4iii Species group - waterbirds	n/a	winter	-	20,000-60,000 individuals	B3b, C4

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2019).

Pressure (threats to the trigger species and/or their habitats)
Threat level 1	Threat level 2	Timing	Scope	Severity	Result
Biological resource use	hunting & collecting terrestrial animals - intentional use (species being assessed is the target)	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Energy production and mining	renewable energy	likely in long term (beyond 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	dams & water management/use - large dams	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Residential and commercial development	tourism and recreation areas	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Transportation and service corridors	shipping lanes	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation	Management planning	Other conservation action	Result
Some of site covered (10-49%)	A management plan exists but it is out of date or not comprehensive	Some limited conservation initiatives are in place	low

For more information about IBA conservation status, please click here

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Labudovo okno	Ramsar Site, Wetland of International Importance	3,733	protected area contained by site	3,733
Karas-Nera	Predeli izuzetnih odlika	1,541	protected area overlaps with site	0
Deliblatska pescara	Rezervat prirode	34,829	protected area overlaps with site	3,125

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Forest	Broadleaved deciduous woodland, Alluvial and very wet forest, Wooded steppe	-
Shrubland	Scrub	-
Grassland	Steppes and dry calcareous grassland, Humid grasslands, Mesophile grasslands	-
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation	-
Artificial/Terrestrial	Arable land, Perennial crops, orchards and groves, Forestry plantations, Urban parks and gardens, Ruderal land	-

For more information about the IUCN Habitat classification, please click here.

Land-use	Extent (% of site)
agriculture	-
fisheries/aquaculture	-
forestry	-
hunting	-
tourism/recreation	-
urban/industrial/transport	-
water management	-

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Labudovo okno. Downloaded from http://datazone.birdlife.org/site/factsheet/labudovo-okno-iba-serbia on 22/09/2023.