Berlenga and Farilhões islands

IBA Criteria

Year of most recent IBA criteria assessment: 2002

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Band-rumped Storm-petrel Hydrobates castro LC breeding 1995 200-400 breeding pairs A4ii, B1ii, B2, C2, C6
Cory's Shearwater Calonectris borealis LC breeding 2002 117-220 breeding pairs C6
Peregrine Falcon Falco peregrinus LC resident 1995 2 breeding pairs C6
A4iii Species group - seabirds n/a breeding 2001 min 10,000 breeding pairs A4iii, C4

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

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Ilhas Berlengas Special Protection Area (Birds Directive) 102,662 protected area contains site 9,560
Ilhas Berlengas Biogenetic Reserves 1,020 unknown 0
Berlengas UNESCO-MAB Biosphere Reserve 19 protected area overlaps with site 0
Berlengas Reserva Natural 9,560 protected area contains site 9,560
Berlengas Marine Protected Area (OSPAR) 9,600 protected area contains site 0
Arquipélago da Berlenga Site of Community Importance (Habitats Directive) 96 protected area overlaps with site 96


IUCN Habitat Habitat detail Extent (% of site)
Sea Open Sea, Sea inlets and coastal features -
Coastline Shingle & stony beaches, Sea cliffs and rocky shores, Rock stacks and islets -
Introduced vegetation -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
fisheries/aquaculture -
military -
nature conservation and research -
tourism/recreation -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Berlenga and Farilhões islands. Downloaded from on 25/09/2021.