Hornøy and Reinøy

IBA Criteria

Year of most recent IBA criteria assessment: 2000

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
King Eider Somateria spectabilis LC winter 1990 2,000-3,000 individuals A4i, B1i
Great Black-backed Gull Larus marinus LC resident 1997 600-700 breeding pairs B3
Arctic Herring Gull Larus smithsonianus LC resident 1989 50,000 breeding pairs A4i, B1i
Razorbill Alca torda NT breeding 1997 250 breeding pairs B1ii
A4iii Species group - waterbirds n/a breeding 1989-1997 50,000-99,999 breeding pairs A4iii, C4
A4iii Species group - seabirds n/a breeding 1997 10,000 breeding pairs A4iii

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Hornøya and Reinøya Nature Reserve 800 protected area contains site 200


IUCN Habitat Habitat detail Extent (% of site)
Shrubland Heathland -
Grassland Alpine, subalpine and boreal grassland -
Sea Sea inlets and coastal features -
Coastline Shingle & stony beaches, Sea cliffs and rocky shores -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
other -
nature conservation and research -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Hornøy and Reinøy. Downloaded from on 20/09/2020.