Pirsagat Islands and Los Island

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
Whooper Swan Cygnus cygnus LC winter 1996 500-1,000 individuals A4i, B1i
Collared Pratincole Glareola pratincola LC breeding 1989 80-90 breeding pairs A4i, B1i, B2
Slender-billed Gull Larus genei LC breeding 1989 550 breeding pairs A4i, B1i
Sandwich Tern Thalasseus sandvicensis LC breeding 1989 min 4,000 breeding pairs A4i, B1i

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


IUCN Habitat Habitat detail Extent (% of site)
Coastline Rock stacks and islets -
Marine Coastal/Supratidal -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
hunting -
urban/industrial/transport -
tourism/recreation -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Pirsagat Islands and Los Island. Downloaded from on 02/04/2023.