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Location Finland, Oulun lääni
Central coordinates 24o 55.00' East  65o 23.00' North
IBA criteria A4i, B1i, B2, B3, C2, C3, C6
Area 4,579 ha
Year of IBA assessment 2000


Site description A group of islands in the Bay of Bothnia. The oldest islands are heavily forested, the youngest (more recently formed by continued land uplift) are sandy or swampy with scattered stones. Human impact is minor.

Key Biodiversity The most important group of islands for birds in the Bay of Bothnia. The numbers of Larus fuscus fuscus, L. marinus, Sterna caspia (50 pairs, 120 birds in spring and 250 birds in autumn) and Alca torda are probably the most significant. The area is also one of the most important staging areas for moulting Anser anser (1,200 birds) in the country. Species of global conservation concern that do not meet IBA criteria: Polysticta stelleri (non-breeding), Haliaeetus albicilla (max. 3 birds, passage).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Goosander Mergus merganser passage  1997  2,000 individuals  medium  B1i, C3  Least Concern 
Lesser Black-backed Gull Larus fuscus breeding  1997  170 breeding pairs  good  B3  Least Concern 
Caspian Tern Hydroprogne caspia breeding  1997  50-60 breeding pairs  good  A4i, B1i, B2, C2, C6  Least Concern 

IBA Monitoring

2010 low favourable medium
Medium - based upon reliable but incomplete / partially representative data

Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) no or imperceptible deterioration low

Anser anser Greylag Goose 1200 1750 individuals 100 favourable
Mergus merganser Goosander 800 450 individuals 57 not assessed
Larus fuscus Lesser Black-backed Gull 170 170 breeding pairs 100 favourable

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Some limited conservation initiatives are in place  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Krunnien luonnonsuojelualue Private Nature Reserve 4,435 protected area overlaps with site 4,434  
Krunnit Islands Wetlands of International Importance (Ramsar) 4,436 protected area overlaps with site 4,436  


IUCN habitat Habitat detail Extent (% of site)
Forest   5%
Sea Sea inlets and coastal features  80%
Coastline Rock stacks and islets  15%

Land use

Land-use Extent (% of site)
not utilised -

Protection status National High International High4,434 ha of IBA covered by Protected Area on Private Land (Krunnit, 4,441 ha). 4,319 ha of IBA covered by Ramsar Site (Krunnit, 4,319 ha). 4,443 ha of IBA covered by Special Protection Area (Perämeren saaret).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Krunnit archipelago. Downloaded from on 26/10/2016

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