Signy Island

IBA Criteria

Year of most recent IBA criteria assessment: 2015

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Wilson's Storm-petrel Oceanites oceanicus LC breeding 1966-1968 200,000 breeding pairs A4ii
Southern Giant Petrel Macronectes giganteus LC breeding 2005-2006 2,351 breeding pairs A4ii
Imperial Shag Leucocarbo atriceps LC breeding 2006-2007 280 breeding pairs A4i
Brown Skua Catharacta antarctica LC breeding 2006 100 breeding pairs A4ii
A4iii Species group - seabirds n/a breeding 1962-2015 289,161 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

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Signy Island. Downloaded from on 06/05/2021.