This Marine IBA is identified using both tracking data and seaward extensions around breeding colonies. It falls within the French Southern Territories Exclusive Economic Zone (EEZ) and the Indian Ocean, Antarctic and Southern FAO ocean region. The site covers an area of 732 km2 and is 118 km away from the closet coastline. The depth ranges from 0 to 310 m, mean annual sea surface temperature falls between 4.86 and 5.09 °C and mean annual chlorophyll-a concentrations found to range between 0.34 and 0.43 mg/m3.
11 species trigger IBA criteria at this Marine IBA. BirdLife analyses of tracking data estimates that 251-4252 individuals of Wandering Albatross (VU) from Iles Crozet are present at the site during the Brood-guard (Mar-Apr), Immature (Feb-Oct), Incubation (Dec-Mar), Juvenile (Dec-Jun) and Post-guard (Apr-Dec) life-history stages. 223-1541 individuals of Sooty Albatross (EN) from are present at the site during the Juvenile (Apr-May) life-history stage. 540-5400 individuals of Sooty Albatross (EN) from Iles Crozet are present at the site during the Incubation (Oct-Dec) and Post-guard (Jan-May) life-history stages. 4425-35400 individuals of White-chinned Petrel (VU) from Iles Crozet are present at the site during the Post-guard (Jan-Apr) life-history stage. Seaward extensions around breeding colonies; Île aux Cochons, Îles des Apôtres include key near-colony areas for breeding populations of Kerguelen Tern (NT) and Imperial Shag (LC) 278-361 individuals.
BirdLife International (2021) Important Bird Areas factsheet: Île aux Cochons / Îles des Apôtres - Marine. Downloaded from http://www.birdlife.org on 25/01/2021.