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Location Portugal, Centro
Central coordinates 9o 36.80' West  39o 23.20' North
IBA criteria A1, A4ii, B1ii, C2, C3, C6
Area 207,300 ha
Year of IBA assessment 2008

Sociedade Portuguesa para o Estudo das Aves

Site description This marine IBA complements the current existing terrestrial IBA (PT014), and stretches to the coastal area of Peniche and cape Carvoeiro. It is a highly productive area as a result of upwelling (Fiúza 1983), supporting the breeding population of Cory's Shearwater on the archipelago almost exclusively, as well as a large number of seabirds on migration and during winter. The extension of the current IBA area southwest was determined by the feeding areas for Cory's Shearwaters, and matches the fishing areas that are locally recognized as important. The Peniche fishing harbour is one of the most important to the fishing industry in Portugal, namely in sardine fisheries. The sea around this archipelago is widely sought out by professional and amateur fishermen, as well as by recreational divers. Given the high number of visitors to the Berlenga island, the tourism induced sea traffic increases exponentially during the summer.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Balearic Shearwater Puffinus mauretanicus winter  2005  1,200-1,400 individuals  poor  A1, A4ii, B1ii, C2  Critically Endangered 
Calonectris diomedea breeding  2005  800 breeding pairs  good  C6  Not Recognised 
Band-rumped Storm-petrel Hydrobates castro breeding  2002-2003  125 breeding pairs  poor  B1ii, C2  Least Concern 
Northern Gannet Morus bassanus winter  2005-2007  12,750 individuals  poor  B1ii, C3  Least Concern 
Larus michahellis resident  2008  25,000 individuals  medium  B1ii, C3  Not Recognised 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Berlengas Natural Reserve 0 protected area overlaps with site 0  
Berlengas Nature Reserve 9,560 protected area contained by site 9,560  
Ilhas Berlengas - PTZPE0009 Birds Directive 102,668 protected area overlaps with site 102,578  


IUCN habitat Habitat detail Extent (% of site)
Sea Sea inlets and coastal features  100%

Land use

Land-use Extent (% of site)
nature conservation and research 5%
Notes: ZPE Ilhas Berlengas (PTZPE000); Reserva Natural das Berlengas;
fisheries/aquaculture -
tourism/recreation -
military -

Protection status Berlengas Islands SPA (PTZPE0009); Decree-law nº 384-B/99, of 23rd September - 5% of the area coincides with the IBA. Berlengas Nature Reserve; Decree-law nº 264/81 of 3rd September reclassified by Regulation Decree nº 30/98 of 23rd December - 5% of the area coincides with the IBA.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Berlengas. Downloaded from on 17/09/2014

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