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Location Norway, Nordland
Central coordinates 12o 0.00' East  67o 30.00' North
IBA criteria A4i, A4ii, A4iii, B1i, B1ii, B2, B3
Area 1,750 ha
Altitude 0 - 259m
Year of IBA assessment 2000

Norsk Ornitologisk Forening

Site description Røst is an archipelago consisting of more than 400 islands. The most important seabird colonies are on Vedøy, Storfjellet, Ellefsnyken, Trenyken and Hernyken. These are steep, grass-covered islands (92-259 m high). The island of Røstlandet is inhabited, with numerous ponds, saltmarshes and mires.

Key Biodiversity The islands of Røst are famous for one of Europe's largest colonies of Fratercula arctica. However, the species has declined severely in abundance during the last 30 years, due to a collapse in the food supply: in the late 1960s the population was estimated as twice as large as it is now. Other breeding seabirds include Hydrobates pelagicus and Oceanodroma leucorhoa (the largest colonies in Norway), Alca torda, Phalacrocorax aristotelis, Uria aalge (abundance has decreased by 20-30% since the early 1980s), Fulmarus glacialis and Rissa tridactyla (c.17,500 pairs in 1988; decrease in numbers by more than 30% between 1993 and 1994). Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (common).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
European Shag Phalacrocorax aristotelis breeding  1997  500-1,000 breeding pairs  A4i, B1i, B3  Least Concern 
Razorbill Alca torda breeding  1997  2,000-3,000 breeding pairs  B1ii, B3  Least Concern 
Black Guillemot Cepphus grylle breeding  1997  1,000-1,500 breeding pairs  good  B1ii, B2  Least Concern 
Atlantic Puffin Fratercula arctica breeding  1997  500,000-660,000 breeding pairs  good  A4ii, B1ii, B2  Least Concern 
A4iii Species group - seabirds breeding  1997  500,000-999,999 breeding pairs  unknown  A4iii   
A4iii Species group - waterbirds breeding  1988  10,000-19,999 breeding pairs  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Nykan Nature Reserve 105 protected area contained by site 0  
Røstlandet Nature Reserve 92 protected area contained by site 92  
Røstøyan Protected Landscape 6,986 protected area contained by site 0  


IUCN habitat Habitat detail Extent (% of site)
Grassland Alpine, subalpine and boreal grassland  -
Wetlands (inland) Blanket bogs; Standing freshwater  -
Coastline Salt marshes; Sea cliffs and rocky shores  -

Land use

Land-use Extent (% of site)
nature conservation and research -

Protection status National Low International None92 ha of IBA covered by Nature Reserve (Røstlandet, 92 ha).

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Recommended citation  BirdLife International (2015) Important Bird Areas factsheet: Røst. Downloaded from on 06/05/2015

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