Île de la Possession

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Île de la Possession
Nickname: Possession Island
Île de la Possession.png
Location South Indian Ocean
Coordinates 46°24′S 51°46′E / 46.400°S 51.767°E / -46.400; 51.767
Archipelago Crozet Islands
Area 150 km2 (58 sq mi)
Length 18 km (11.2 mi)
Width 13 km (8.1 mi)
Highest elevation 934 m (3,064 ft)
Highest point Pic du Mascarin
Population No permanent inhabitants; temporary research station staff only
Illustration of an adult Eaton's Pintail with three ducklings by Keulemans
Eaton’s Pintails inhabit the island
Observation results at Ship Bay, Île de la Possession, published 1893

Île de la Possession, or Possession Island, formerly Île de la Prise de Possession, is part of the subantarctic Crozet Archipelago.

With an area of 150 km2 (58 sq mi) it is the largest island of the group and the only inhabited one. Administratively, it is part of the French Southern and Antarctic Lands. It is an important nesting site for seabirds.


Île de la Possession lies in the eastern group of the archipelago, about 20 km west of Île de l'Est (East Island). It has a rugged, landscape of mountains cut by deep glaciated valleys. The coastal areas and valleys are covered with herbaceous subantarctic vegetation. The island is uninhabited except for the staff of the Alfred Faure research station at the eastern end of the island, with a maximum of about 20 people.[1]

Important Bird Area[edit]

The island has been identified as an Important Bird Area (IBA) by BirdLife International as a breeding site for seabirds, of which there are at least 26 breeding species. Birds nesting in relatively large numbers include king, northern rockhopper and macaroni penguins, wandering, sooty and light-mantled albatrosses, northern giant petrels, medium-billed prions, Kerguelen and soft-plumaged petrels, and South Georgia diving petrels.

Other island breeders in smaller numbers are southern giant petrels, grey-headed albatrosses and Kerguelen terns. Crozet blue-eyed shags, black-faced sheathbills and Eaton's pintails are resident. The smaller birds nest only at higher altitudes because of their vulnerability to rat predation at lower levels.[1]

Other wildlife[edit]

The goats that were introduced have been eradicated, though black rats remain and are a threat to the birdlife. Both Antarctic and subantarctic fur seals, as well as southern elephant seals, breed on the island. A pod of about 80 killer whales inhabits the surrounding waters. Two plants and 59 arthropod species endemic to the archipelago are present.[1]

See also[edit]


  1. ^ a b c BirdLife International. (2012). Important Bird Areas factsheet: Île de la Possession. Downloaded from http://www.birdlife.org on 2012-01-10.

Coordinates: 46°24′S 51°46′E / 46.400°S 51.767°E / -46.400; 51.767