• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

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
Swamp Francolin Ortygornis gularis	NT	resident	2004	present	A1
Baer's Pochard Aythya baeri	CR	winter	2004	present	A1
Masked Finfoot Heliopais personatus	CR	resident	2004	present	A1
Greater Adjutant Leptoptilos dubius	NT	non-breeding	2004	present	A1
Lesser Adjutant Leptoptilos javanicus	NT	resident	2004	present	A1
Spoon-billed Sandpiper Calidris pygmaea	CR	winter	2004	present	A1
Greater Spotted Eagle Clanga clanga	VU	winter	2004	present	A1
Pallas's Fish-eagle Haliaeetus leucoryphus	EN	resident	2004	present	A1

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

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2004. The most recent assessment (2012) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	good (> 90%)	good (> 90%)	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
No known threats	happening now	whole area/population (>90%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	Some limited conservation initiatives are in place	medium

Year	Protected Area	Designation	% overlap with IBA
1976	Sajnakhali	Sanctuary	74
1984	Sundarban	National Park	100
1987	Sundarbans National Park	World Heritage Site (natural or mixed)	100
2001	Sunderban	UNESCO-MAB Biosphere Reserve	100

Habitat1	Habitat detail	% of IBA
Forest	Mangrove forest (tropical)	major (>10)
Marine Intertidal		major (>10)
Artificial/Terrestrial		-
Marine Coastal/Supratidal		-
Marine Neritic		-

1. IUCN Habitat classification.

Land use	% of IBA
fisheries/aquaculture	-
nature conservation and research	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sundarbans Biosphere Reserve (National Park) (India). Downloaded from https://datazone.birdlife.org/site/factsheet/sundarbans-biosphere-reserve-(national-park)-iba-india on 22/11/2024.