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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 60,000 ha
Altitude 0 - 40m
Year of IBA assessment 2000

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 non-breeding  1998  35,000 individuals  medium  A4i, B1i  Least Concern 
Red-breasted Merganser Mergus serrator non-breeding  1985  3,000 individuals  medium  A4i, B1i  Least Concern 
Red-throated Loon Gavia stellata breeding  1985  22 breeding pairs  good  B2  Least Concern 
Great Cormorant Phalacrocorax carbo resident  1992  2,955 breeding pairs  good  A4i, B1i  Least Concern 
European Shag Phalacrocorax aristotelis resident  1998  1,000 breeding pairs  good  A4i, B1i, B3  Least Concern 
White-tailed Sea-eagle Haliaeetus albicilla winter  1989  20 individuals  A1  Least Concern 
Black Guillemot Cepphus grylle non-breeding  1988  3,000 individuals  medium  B1ii  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 (2015) Important Bird Areas factsheet: Froan. Downloaded from on 04/05/2015

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