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Location Norway, Sør-Trøndelag
Central coordinates 8o 40.00' East  63o 50.00' North
IBA criteria A1, A4i, B1i, B1ii, B2, B3
Area 76,100 ha
Altitude 0 - 40m
Year of IBA assessment 2014

Norsk Ornitologisk Forening

Site description The Froan archipelago consists of hundreds of islands, islets and skerries. Most of the islands are low and undulating, with rock outcrops, moorland and small bogs. Only the islands of Sauøya and Sørbuøya are inhabited at present.

Key Biodiversity Up to 17 Gavia adamsii and eight Gavia immer winter in the area.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Common Eider Somateria mollissima breeding  2005-2006  2,800 breeding pairs  good  B1i, B3  Near Threatened 
Common Eider Somateria mollissima winter  2005-2006  5,000 individuals  good  B1i, B3  Near Threatened 
Long-tailed Duck Clangula hyemalis winter  2005-2006  977 individuals  good  A1  Vulnerable 
Common Loon Gavia immer winter  2005-2006  100-150 individuals  good  B1i  Least Concern 
Yellow-billed Loon Gavia adamsii winter  2005-2006  10-20 individuals  good  A1  Near Threatened 
Great Cormorant Phalacrocorax carbo breeding  2005-2006  2,280 breeding pairs  good  B1i  Least Concern 
Great Cormorant Phalacrocorax carbo winter  2005-2006  3,400 individuals  good  B1i  Least Concern 
European Shag Phalacrocorax aristotelis breeding  2005-2006  500 breeding pairs  good  B3  Least Concern 
European Shag Phalacrocorax aristotelis winter  2005-2006  5,200 individuals  good  A4i, B1i, B3  Least Concern 
Purple Sandpiper Calidris maritima winter  2005-2006  500-600 individuals  good  B3  Least Concern 
Black Guillemot Cepphus grylle winter  2005-2006  2,900 individuals  good  B1ii, B2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Froan Nature Reserve 40,506 protected area contained by site 40,400  
Froan Protected Landscape 8,969 protected area contained by site 8,000  
Froan Animal Protection Area Flora and Fauna Protection Area 12,000 protected area contained by site 12,000  
Froan Nature Reserve and Landscape Protection Area Wetlands of International Importance (Ramsar) 48,400 protected area overlaps with site 48,400  


IUCN habitat Habitat detail Extent (% of site)
Shrubland Heathland  -
Sea Open Sea; Sea inlets and coastal features  90%
Coastline Mud flats & sand flats; Rock stacks and islets; Sea cliffs and rocky shores; Shingle & stony beaches  10%

Land use

Land-use Extent (% of site)
fisheries/aquaculture 10%
nature conservation and research 85%
tourism/recreation 5%

Protection status National High International None40,400 ha of IBA covered by Nature Reserve (Froan, 40,400 ha). 12,000 ha of IBA covered by Flora and Fauna Protection Area (Froan Animal Protection Area, 12,000 ha). 8,000 ha of IBA covered by Landscape Protected Area (Froan, 8,000 ha).

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

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