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The site was identified as important in 2010 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
Black Grouse Lyrurus tetrix	LC	breeding	2000-2007	7-22 males	C6
Whooper Swan Cygnus cygnus	LC	breeding	2000-2007	2-3 breeding pairs	C6
Greater White-fronted Goose Anser albifrons	LC	passage	2004-2009	15,000 individuals	C3
Corncrake Crex crex	LC	breeding	2000-2007	300-887 males	C1, C6
Little Crake Zapornia parva	LC	breeding	2000-2007	42 males	C6
Great Snipe Gallinago media	NT	breeding	2000-2007	65-94 males	C1, C2, C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	2000-2007	66-91 breeding pairs	C6
Montagu's Harrier Circus pygargus	LC	breeding	2000-2007	36-45 breeding pairs	C6
Aquatic Warbler Acrocephalus paludicola	VU	breeding	2000-2007	10-26 males	C1
A4iii Species group - waterbirds	n/a	passage	2007-2009	25,000 individuals	C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2010) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2010) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Natural system modifications	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Agricultural expansion and intensification	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Residential and commercial development	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Human intrusions and disturbance	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Invasive and other problematic species and genes	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Climate change and severe weather	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Biological resource use	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Energy production and mining	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Transportation and service corridors	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Pollution	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
No known threats	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Little/none of site covered (<10%)	No management planning has taken place	Some limited conservation initiatives are in place	negligible

Year	Protected Area	Designation	% overlap with IBA
1986	Dolina Narwi	Obszar Chronionego Krajobrazu	79
2002	Ostoja w Dolinie Górnej Narwi	Site of Community Importance (Habitats Directive)	100
2004	Dolina Górnej Narwi	Special Protection Area (Birds Directive)	100

Habitat1	Habitat detail	% of IBA
Grassland	Humid grasslands, Mesophile grasslands	63
Artificial/Terrestrial	Arable land, Ruderal land	18
Forest	Broadleaved deciduous woodland, Mixed woodland, Alluvial and very wet forest	16
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation	2
Other		1

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	70
unknown	15
fisheries/aquaculture	10
forestry	5
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Upper Narew River Valley (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/upper-narew-river-valley-iba-poland on 23/11/2024.