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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
Corncrake Crex crex	LC	breeding	2008-2009	70-90 males	C1
Great Snipe Gallinago media	NT	breeding	2004-2009	1-10 males	C6
Black Tern Chlidonias niger	LC	breeding	2008-2009	80-120 breeding pairs	C6

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 (2011) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Whooper Swan Cygnus cygnus	1	1	breeding pairs	100	favourable
Corncrake Crex crex	211	211	males	100	favourable
Spotted Crake Porzana porzana	36	36	males	100	favourable
Little Crake Zapornia parva	3	3	males	100	favourable
Common Crane Grus grus	103	103	breeding pairs	100	favourable
White Stork Ciconia ciconia	139	139	breeding pairs	100	favourable
Burhinus oedicnemus	1	1	breeding pairs	100	favourable
Great Snipe Gallinago media	9	9	males	100	favourable
Little Tern Sternula albifrons	12	12	breeding pairs	100	favourable
Black Tern Chlidonias niger	229	229	breeding pairs	100	favourable
Common Tern Sterna hirundo	73	73	breeding pairs	100	favourable
Western Marsh-harrier Circus aeruginosus	42	42	breeding pairs	100	favourable
Western Marsh-harrier Circus aeruginosus	30	30	breeding pairs	100	favourable
Montagu's Harrier Circus pygargus	6	6	breeding pairs	100	favourable
White-tailed Sea-eagle Haliaeetus albicilla	3	3	breeding pairs	100	favourable
Milvus migrans	1	1	breeding pairs	100	favourable
Common Kingfisher Alcedo atthis	24	24	breeding pairs	100	favourable
Black Woodpecker Dryocopus martius	55	55	breeding pairs	100	favourable
Red-backed Shrike Lanius collurio	475	475	breeding pairs	100	favourable
Woodlark Lullula arborea	220	220	breeding pairs	100	favourable
Barred Warbler Curruca nisoria	105	105	breeding pairs	100	favourable
Tawny Pipit Anthus campestris	44	44	breeding pairs	100	favourable
Ortolan Bunting Emberiza hortulana	20	20	breeding pairs	100	favourable

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
1977	Bartnia	Rezerwat Przyrody	<1
1982	Równiny Kurpiowskiej i Doliny Dolnej Narwi	Obszar Chronionego Krajobrazu	29
1989	Rycerski Kierz	Rezerwat Przyrody	<1
1993	Nadbużański Park Krajobrazowy	Park Krajobrazowy	6
2001	Ostoja Narwiańska	Site of Community Importance (Habitats Directive)	20
2007	Dolina Dolnej Narwi	Special Protection Area (Birds Directive)	91

Habitat1	Habitat detail	% of IBA
Grassland		39
Forest		18
Wetlands (inland)		5

1. IUCN Habitat classification.

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