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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
Whooper Swan Cygnus cygnus	LC	breeding	2007-2009	2-3 breeding pairs	C6
Corncrake Crex crex	LC	breeding	2009	600-800 males	C1, C6
Common Crane Grus grus	LC	breeding	2004-2009	300-400 breeding pairs	C6
Black Stork Ciconia nigra	LC	breeding	2004-2009	15-20 breeding pairs	C6
White Stork Ciconia ciconia	LC	breeding	2008-2009	800-900 breeding pairs	C6
Lesser Spotted Eagle Clanga pomarina	LC	breeding	1995-2003	90-110 breeding pairs	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	2004-2009	60-80 breeding pairs	C6
Montagu's Harrier Circus pygargus	LC	breeding	2004-2009	15-30 breeding pairs	C6
White-tailed Sea-eagle Haliaeetus albicilla	LC	breeding	2004-2009	4-7 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
Corncrake Crex crex	800	800	breeding pairs	100	favourable
Black Stork Ciconia nigra	20	20	breeding pairs	100	favourable
White Stork Ciconia ciconia	900	900	breeding pairs	100	favourable
Lesser Spotted Eagle Clanga pomarina	110	110	breeding pairs	100	favourable
Montagu's Harrier Circus pygargus	30	14	breeding pairs	47	unfavourable
White-tailed Sea-eagle Haliaeetus albicilla	7	16	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
1971	Jezioro Martwe	Rezerwat Przyrody	<1
1985	Wzniesień Górowskich	Obszar Chronionego Krajobrazu	8
1985	Rzeki Banówki	Obszar Chronionego Krajobrazu	3
1985	Rzeki Wałszy	Obszar Chronionego Krajobrazu	3
1988	Bajory	Rezerwat Przyrody	<1
1988	Kałeckie Błota	Rezerwat Przyrody	<1
1998	Doliny Elmy	Obszar Chronionego Krajobrazu	6
1998	Jeziora Oświn	Obszar Chronionego Krajobrazu	5
1998	Doliny Dolnej Łyny	Obszar Chronionego Krajobrazu	2
1998	Doliny Rzeki Guber	Obszar Chronionego Krajobrazu	2
2004	Jezioro Oświn i okolice	Special Protection Area (Birds Directive)	<1
2004	Bieńkowo	Site of Community Importance (Habitats Directive)	<1
2008	Ostoja Warmińska	Special Protection Area (Birds Directive)	100
2009	Ostoja nad Oświnem	Site of Community Importance (Habitats Directive)	1

Habitat1	Habitat detail	% of IBA
Artificial/Terrestrial		69
Forest		20
Grassland		9
Wetlands (inland)		2

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Warmia Site (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/warmia-site-iba-poland on 23/11/2024.