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Location Latvia, Talsi district,Ventspils district
Central coordinates 22o 3.00' East  57o 35.00' North
IBA criteria C6
Area 10,056 ha
Altitude 0 - 20m
Year of IBA assessment 2004

Latvijas Ornitologijas Biedriba

Site description Large and complex site, consisting predominantly of wetland and forest. There is a raised bog Dizpurvs with forested dune peninsulas in the centre. A natural system of parallel ancient forested dunes interspersed with narrow strips of fens or mires and lakes extends to the north. Surrounding and delimiting the area are Trumpe, Stende and Irbe rivers with natural flood-plain meadows and oxbows. Listed as an IBA since 1994 [3, 4, 1]. Partially protected: there is a 87.1% overlap with Ances purvi un mezi restricted nature reserve, a candidate SPA.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Western Capercaillie Tetrao urogallus resident  1994-2004  15-20 males only  unknown  C6  Least Concern 
Merlin Falco columbarius breeding  1994-2004  2 breeding pairs  unknown  C6  Least Concern 
Common Crane Grus grus breeding  1994-2004  20-25 breeding pairs  unknown  C6  Least Concern 
Eurasian Pygmy-owl Glaucidium passerinum resident  1994-2004  15-20 breeding pairs  unknown  C6  Least Concern 
Boreal Owl Aegolius funereus resident  1994-2004  5-15 breeding pairs  unknown  C6  Least Concern 
Black Woodpecker Dryocopus martius resident  1994-2004  25-30 breeding pairs  unknown  C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Ances purvi un mezi Nature Reserve 8,772 protected area contained by site 8,763  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland; Mixed woodland; Native coniferous woodland  63%
Shrubland Scrub  21%
Grassland Mesophile grasslands  3%
Wetlands (inland) Fens, transition mires and springs; Raised bogs  -
Artificial - terrestrial Other urban and industrial areas  minor
Other   2%
Coastline Sand dunes & beaches  -

Land use

Land-use Extent (% of site)
forestry 25%
hunting major
nature conservation and research minor
tourism/recreation 20%
urban/industrial/transport 10%
military -
agriculture 1%

Related state of the world's birds case studies

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Irbe valley and Dizpurvs. Downloaded from on 22/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife