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Location Antarctica
Central coordinates 56o 50.33' West  64o 12.04' South
IBA criteria A4i, A4iii
Area 409 ha
Altitude 0 - 450m
Year of IBA assessment 2015

Site description Cockburn Island is a small, oval-shaped, ice-free island lying rising to around 450 m and 5 km northwest of Seymour Island, to the east of James Ross Island. The IBA comprises all of Cockburn Island.

Information on the environment of Cockburn Island is not available. The nearest permanent scientific station is Marambio (Argentina) located 10 km to the east, more information on which can be found under IBA Ant031.

Key Biodiversity Approximately 800 pairs of Imperial Shag (Phalacrocorax atriceps) were recorded breeding on Cockburn Island in 2006 (Lynch et al. 2008). A large colony of Adélie Penguin (Pygoscelis adeliae) and Snow Petrel (Pagodroma nivea) nests were reported on the island in 1901, although it is not known whether these species continue to breed in the area.

Non-bird biodiversity: None known.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Imperial Shag Phalacrocorax atriceps breeding  2006  800 breeding pairs  medium  A4i  Least Concern 
A4iii Species group - seabirds breeding  2006-2011  16,521 breeding pairs  poor  A4iii   

Protection status None

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Cockburn Island. Downloaded from on 22/10/2016

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