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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'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Western Capercaillie Tetrao urogallus	LC	resident	1994-2004	25-30 males	C6
Black Grouse Lyrurus tetrix	LC	resident	1994-2004	50-90 males	C6
European Nightjar Caprimulgus europaeus	LC	breeding	1994-2004	200-300 breeding pairs	C6
Eurasian Pygmy-owl Glaucidium passerinum	LC	resident	1994-2004	20-40 breeding pairs	C6
Red-breasted Flycatcher Ficedula parva	LC	breeding	1994-2004	150-400 breeding pairs	C6
A4iv Species group - soaring birds/cranes	n/a	passage	-	3,000 individuals	C5

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2004).

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Zilo kalnu Šlīteres krauja	Dabas piemineklis	48	protected area contained by site	0
Zartapu grava	Dabas piemineklis	14	protected area contained by site	0
Sliteres nacionalais parks	Site of Community Importance (Habitats Directive)	16,361	protected area overlaps with site	0
Slīteres nacionālais parks	Nacionalais parks	16,414	protected area overlaps with site	0
Sliteres nacionalais parks	Special Protection Area (Birds Directive)	16,361	protected area overlaps with site	16,145
Rigas lica rietumu piekraste	Baltic Sea Protected Area (HELCOM)	132,260	protected area is adjacent to site	0
Rigas lica rietumu piekraste	Site of Community Importance (Habitats Directive)	132,172	protected area is adjacent to site	0
Rīgas līča rietumu piekraste	Aizsargajama juras teritorija	132,200	protected area is adjacent to site	0
Rigas lica rietumu piekraste	Special Protection Area (Birds Directive)	132,172	protected area is adjacent to site	0
Pitragupes krasti	Dabas piemineklis	8	protected area contained by site	0
Kaļķupītes klintis	Dabas piemineklis	13	protected area overlaps with site	0
Kalkupes ieleja	Special Protection Area (Birds Directive)	1,120	protected area overlaps with site	1,122
Kaļķupes ieleja	Dabas liegums	1,120	protected area overlaps with site	0
Kalkupes ieleja	Site of Community Importance (Habitats Directive)	1,120	protected area overlaps with site	0
Irbes saurums	Baltic Sea Protected Area (HELCOM)	172,485	protected area is adjacent to site	0
Irbes šaurums	Aizsargajama juras teritorija	172,400	protected area is adjacent to site	0
Irbes saurums	Special Protection Area (Birds Directive)	172,412	protected area is adjacent to site	0
Dizkalni	Nature Reserve	75	protected area overlaps with site	1,119
Ances purvi un mezi	Site of Community Importance (Habitats Directive)	10,130	protected area is adjacent to site	0
Ances purvi un mezi	Special Protection Area (Birds Directive)	10,130	protected area is adjacent to site	0
Ances purvi un meži	Dabas liegums	10,130	protected area is adjacent to site	0

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Forest	Native coniferous woodland, Mixed woodland, Broadleaved deciduous woodland	-
Grassland	Mesophile grasslands	-
Marine Intertidal		-
Artificial/Terrestrial	Arable land, Other urban and industrial areas, Highly improved re-seeded landscapes	-
Shrubland	Scrub	-
Marine Coastal/Supratidal		-

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

Land-use	Extent (% of site)
nature conservation and research	-
tourism/recreation	-
forestry	-
hunting	-

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Slitere and Zilie kalni. Downloaded from http://datazone.birdlife.org/site/factsheet/slitere-and-zilie-kalni-iba-latvia on 24/09/2023.